<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:837b1a7f-ba7f-45d5-a021-4cb5d87ac01d,g:daf6d04a-576e-4d1d-88f6-1728da3c19d8-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited" xlink:type="simple" xlink:href="rxt-20250930.xsd#CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_4431fb71-f7f3-4d6a-9200-44d1d82b9d08" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_4431fb71-f7f3-4d6a-9200-44d1d82b9d08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_a14b21d8-0bf9-451b-9edc-df111b20c40a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_a14b21d8-0bf9-451b-9edc-df111b20c40a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_2c12dca2-b627-4c64-8dfb-ae9fe207d1a8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_2c12dca2-b627-4c64-8dfb-ae9fe207d1a8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_08e8ec4a-ac35-4bd6-8341-6e8dda66c891" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_LiabilitiesCurrent_08e8ec4a-ac35-4bd6-8341-6e8dda66c891" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_FinancingObligationsNoncurrent_5032e9e0-60c0-4a14-81bb-62fe13bd7d4f" xlink:href="rxt-20250930.xsd#rxt_FinancingObligationsNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_rxt_FinancingObligationsNoncurrent_5032e9e0-60c0-4a14-81bb-62fe13bd7d4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_2f56c248-3ce4-450e-a883-32fec05e8159" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_2f56c248-3ce4-450e-a883-32fec05e8159" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_29eff63b-1929-4ea4-9ca9-cd1d99291e09" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_2ae4df07-097d-4ed8-aa80-d9ee1351def9" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_29eff63b-1929-4ea4-9ca9-cd1d99291e09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_c06c43a6-84c7-4897-9210-9bc089693e17" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_c06c43a6-84c7-4897-9210-9bc089693e17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_8beba068-6274-4cd6-9fd1-97d8fd53eab1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_8beba068-6274-4cd6-9fd1-97d8fd53eab1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_50443f8a-13bb-4753-a8c0-db68572602ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_AssetsCurrent_50443f8a-13bb-4753-a8c0-db68572602ce" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_0b3d402c-4aad-4f6d-8456-8f73aabd9271" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_0b3d402c-4aad-4f6d-8456-8f73aabd9271" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_edd2025a-3c08-46a0-aa0b-f9c50501165b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_Goodwill_edd2025a-3c08-46a0-aa0b-f9c50501165b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_66895abb-6ff1-4ae7-91b2-384691454c81" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_e6052e34-c351-47f0-81a2-96b13daccec3" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_66895abb-6ff1-4ae7-91b2-384691454c81" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_c778f85d-a2cc-48e6-924b-8b2822550a4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_77c15626-d530-4dac-b027-c54cb16cbc4f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_c778f85d-a2cc-48e6-924b-8b2822550a4a" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_77c15626-d530-4dac-b027-c54cb16cbc4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrent_23ac271b-5431-4dcf-b07a-d33bf32d7aa5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_c778f85d-a2cc-48e6-924b-8b2822550a4a" xlink:to="loc_us-gaap_PrepaidExpenseCurrent_23ac271b-5431-4dcf-b07a-d33bf32d7aa5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_0664c788-5027-41cf-8327-8489a67c5e20" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_c778f85d-a2cc-48e6-924b-8b2822550a4a" xlink:to="loc_us-gaap_OtherAssetsCurrent_0664c788-5027-41cf-8327-8489a67c5e20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_14a849f1-04e3-4d51-b417-e3418806a460" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_c778f85d-a2cc-48e6-924b-8b2822550a4a" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_14a849f1-04e3-4d51-b417-e3418806a460" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_88199f3a-c49f-4617-ba5e-4697a155ab2d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_LongTermDebtCurrent_88199f3a-c49f-4617-ba5e-4697a155ab2d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_a00039d3-e4ad-41d9-ab66-27eae21c4d58" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_a00039d3-e4ad-41d9-ab66-27eae21c4d58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent_5ba74912-9ed5-4f3a-857a-f9e40d9e9952" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent_5ba74912-9ed5-4f3a-857a-f9e40d9e9952" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a6398d1f-4482-4038-94eb-d7274227ca85" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a6398d1f-4482-4038-94eb-d7274227ca85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPayableCurrent_2fe27911-a211-4e4c-b7ce-cd722f686e1e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_InterestPayableCurrent_2fe27911-a211-4e4c-b7ce-cd722f686e1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_1b6aa031-5635-48f6-a763-54be823f80aa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_1b6aa031-5635-48f6-a763-54be823f80aa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_53bb8094-a1c7-4159-913f-cdc96c4e25e3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_53bb8094-a1c7-4159-913f-cdc96c4e25e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_FinancingObligationsCurrent_c2190bef-d3bc-4a7b-afa2-ad5f4eb2badd" xlink:href="rxt-20250930.xsd#rxt_FinancingObligationsCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_rxt_FinancingObligationsCurrent_c2190bef-d3bc-4a7b-afa2-ad5f4eb2badd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_728f280c-2241-4259-bb5a-a176399e3bc6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_eee00370-c57b-42c8-b611-99b3a4931c6f" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_728f280c-2241-4259-bb5a-a176399e3bc6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_db5bd4d7-0cbf-49ef-ae58-9bc78441bd31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_db5bd4d7-0cbf-49ef-ae58-9bc78441bd31" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_f0c54ef3-3589-4604-b935-a0ffe8411814" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_PreferredStockValue_f0c54ef3-3589-4604-b935-a0ffe8411814" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_6d425590-6927-4029-a4f5-4a70d63dd4cc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_6d425590-6927-4029-a4f5-4a70d63dd4cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_2bbb5b16-f28e-4556-b88d-72976ebec15e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_AdditionalPaidInCapital_2bbb5b16-f28e-4556-b88d-72976ebec15e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_d18650d7-ed98-452e-a6c3-a2642d710985" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_CommonStockValue_d18650d7-ed98-452e-a6c3-a2642d710985" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_799e3f52-1616-45f6-b070-bf5644d3470b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_TreasuryStockCommonValue"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_67a01600-8ece-4394-a2fb-c86253aa5047" xlink:to="loc_us-gaap_TreasuryStockCommonValue_799e3f52-1616-45f6-b070-bf5644d3470b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_53fc5254-829f-4837-9173-124554fe3249" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_9f48773c-91cf-444b-b57b-12ddaeff4489" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_53fc5254-829f-4837-9173-124554fe3249" xlink:to="loc_us-gaap_Liabilities_9f48773c-91cf-444b-b57b-12ddaeff4489" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_78584b25-56e5-4842-bc8e-fead22abca31" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_53fc5254-829f-4837-9173-124554fe3249" xlink:to="loc_us-gaap_CommitmentsAndContingencies_78584b25-56e5-4842-bc8e-fead22abca31" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_ba427c9f-a1f5-47a0-834c-ceb555f11e16" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_53fc5254-829f-4837-9173-124554fe3249" xlink:to="loc_us-gaap_StockholdersEquity_ba427c9f-a1f5-47a0-834c-ceb555f11e16" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSUnaudited" xlink:type="simple" xlink:href="rxt-20250930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSUnaudited"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_3b633266-c9ea-4690-b925-f33741b1ff13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_8ade7e6f-e15d-4212-8b35-1139f4004c14" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_3b633266-c9ea-4690-b925-f33741b1ff13" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_8ade7e6f-e15d-4212-8b35-1139f4004c14" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_c08585a2-6839-472a-98ca-b54e77e2c903" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_3b633266-c9ea-4690-b925-f33741b1ff13" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_c08585a2-6839-472a-98ca-b54e77e2c903" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_d786c16d-83c1-4fff-81de-0e6a3313abc1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_3b633266-c9ea-4690-b925-f33741b1ff13" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax_d786c16d-83c1-4fff-81de-0e6a3313abc1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_3c1bbcb0-4a1d-4204-839b-b1b24b25ac44" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3b1ee71a-bf85-4aeb-8e49-cb3d55aa2840" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_3c1bbcb0-4a1d-4204-839b-b1b24b25ac44" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_3b1ee71a-bf85-4aeb-8e49-cb3d55aa2840" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_ea1541fa-8b43-4ab5-a206-8084d89b19f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_3c1bbcb0-4a1d-4204-839b-b1b24b25ac44" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_ea1541fa-8b43-4ab5-a206-8084d89b19f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_5ba1a1fc-0f1e-4d60-b678-3b2de1ca316a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_73349b2d-cdd6-4d70-8d04-7f49340722b2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_5ba1a1fc-0f1e-4d60-b678-3b2de1ca316a" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_73349b2d-cdd6-4d70-8d04-7f49340722b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_948a5e64-8bb3-431d-af3b-033a860c1081" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_5ba1a1fc-0f1e-4d60-b678-3b2de1ca316a" xlink:to="loc_us-gaap_InterestExpenseNonoperating_948a5e64-8bb3-431d-af3b-033a860c1081" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_ed66eef6-92a7-48dc-9284-58d4449e4f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_5ba1a1fc-0f1e-4d60-b678-3b2de1ca316a" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_ed66eef6-92a7-48dc-9284-58d4449e4f1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_3749c41d-db14-4324-97cd-1bc02dce6891" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnInvestments"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_5ba1a1fc-0f1e-4d60-b678-3b2de1ca316a" xlink:to="loc_us-gaap_GainLossOnInvestments_3749c41d-db14-4324-97cd-1bc02dce6891" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_a5eb4726-fbb2-4fe4-927d-a5487e891a7d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_06b0c020-cc06-442a-bb66-bfc43048cf53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_a5eb4726-fbb2-4fe4-927d-a5487e891a7d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_06b0c020-cc06-442a-bb66-bfc43048cf53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_5ba61d08-0588-4b37-b5be-9c2fac292797" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_a5eb4726-fbb2-4fe4-927d-a5487e891a7d" xlink:to="loc_us-gaap_NetIncomeLoss_5ba61d08-0588-4b37-b5be-9c2fac292797" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_43619d19-a8f4-49b6-bc4b-630852077868" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_db3e188a-e14a-410f-84ee-6a8561e797de" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_43619d19-a8f4-49b6-bc4b-630852077868" xlink:to="loc_us-gaap_CostOfRevenue_db3e188a-e14a-410f-84ee-6a8561e797de" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_bdfc9441-6118-4030-80d2-bf1ab0e51582" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_43619d19-a8f4-49b6-bc4b-630852077868" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_bdfc9441-6118-4030-80d2-bf1ab0e51582" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fde530e7-8568-442c-9e18-f75f1fbbcd53" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_c8df8cea-f883-45ae-9777-f3ff1920e909" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fde530e7-8568-442c-9e18-f75f1fbbcd53" xlink:to="loc_us-gaap_OperatingIncomeLoss_c8df8cea-f883-45ae-9777-f3ff1920e909" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_0e660a0c-2967-4958-929a-bc64af919105" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_fde530e7-8568-442c-9e18-f75f1fbbcd53" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_0e660a0c-2967-4958-929a-bc64af919105" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_84ca61d1-82d2-4cc9-8f12-3487ed4913d4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_64a53c69-3cb4-47ee-817d-f50a3587407a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_84ca61d1-82d2-4cc9-8f12-3487ed4913d4" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_64a53c69-3cb4-47ee-817d-f50a3587407a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_4980249a-8790-4d77-bbbe-b9b96dd44a9a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_84ca61d1-82d2-4cc9-8f12-3487ed4913d4" xlink:to="loc_us-gaap_GrossProfit_4980249a-8790-4d77-bbbe-b9b96dd44a9a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_b8b4eb96-2fb9-4b74-9616-65c79b491448" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_84ca61d1-82d2-4cc9-8f12-3487ed4913d4" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_b8b4eb96-2fb9-4b74-9616-65c79b491448" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_AssetsImpairmentChargesExcludingGoodwill_036fb398-47ee-4ddf-87b7-7c8cc89fb1fc" xlink:href="rxt-20250930.xsd#rxt_AssetsImpairmentChargesExcludingGoodwill"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_84ca61d1-82d2-4cc9-8f12-3487ed4913d4" xlink:to="loc_rxt_AssetsImpairmentChargesExcludingGoodwill_036fb398-47ee-4ddf-87b7-7c8cc89fb1fc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="simple" xlink:href="rxt-20250930.xsd#CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWSUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a77f1124-6d7e-437e-9111-4d6afc94ba77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_df44a4ec-90e2-4ac1-9c40-45dcb4271ddd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a77f1124-6d7e-437e-9111-4d6afc94ba77" xlink:to="loc_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_df44a4ec-90e2-4ac1-9c40-45dcb4271ddd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_9e5b8242-00f4-4fde-927a-23e19275a8b5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a77f1124-6d7e-437e-9111-4d6afc94ba77" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_9e5b8242-00f4-4fde-927a-23e19275a8b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_47dcd0d1-eeb0-4dbb-a5a8-45f1e76ad772" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a77f1124-6d7e-437e-9111-4d6afc94ba77" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_47dcd0d1-eeb0-4dbb-a5a8-45f1e76ad772" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c86e51d7-294c-444f-864f-e4c6da70eff9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_fc4fc28b-c07f-46f6-99d4-7b8854f6a96c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c86e51d7-294c-444f-864f-e4c6da70eff9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_fc4fc28b-c07f-46f6-99d4-7b8854f6a96c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_65caa915-5b17-48dd-a9bd-07090e75d792" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c86e51d7-294c-444f-864f-e4c6da70eff9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_65caa915-5b17-48dd-a9bd-07090e75d792" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_97c2512c-f417-446b-aaba-6b8effcbb5e4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c86e51d7-294c-444f-864f-e4c6da70eff9" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_97c2512c-f417-446b-aaba-6b8effcbb5e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_67c8e4f9-ec39-4885-820a-dc338b498773" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c86e51d7-294c-444f-864f-e4c6da70eff9" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_67c8e4f9-ec39-4885-820a-dc338b498773" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromStockPlans_fbe1fcbd-8216-4b5e-9dc7-dc890a1ddd89" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockPlans"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_ProceedsFromStockPlans_fbe1fcbd-8216-4b5e-9dc7-dc890a1ddd89" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_92a05a1a-d401-4412-b2a1-377e1d9b4d9e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_92a05a1a-d401-4412-b2a1-377e1d9b4d9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_4b1acb2b-5c08-4958-bf86-549d8fa4d235" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_4b1acb2b-5c08-4958-bf86-549d8fa4d235" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_033099eb-e0ea-4d81-bd54-b2287f46955c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_033099eb-e0ea-4d81-bd54-b2287f46955c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_31db6c3e-625d-4fb7-ab52-b193098e55e1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfDebtExtinguishmentCosts"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_PaymentsOfDebtExtinguishmentCosts_31db6c3e-625d-4fb7-ab52-b193098e55e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForDerivativeInstrumentFinancingActivities_64eb8dce-5b60-4bba-8b1b-a78aff185c08" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsForDerivativeInstrumentFinancingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_PaymentsForDerivativeInstrumentFinancingActivities_64eb8dce-5b60-4bba-8b1b-a78aff185c08" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_1ae78cf9-6a86-4473-b022-34ff33f71deb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_1ae78cf9-6a86-4473-b022-34ff33f71deb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_RepaymentsOfFinancingObligations_c4b941b1-8060-4642-9b16-96a5d251f79f" xlink:href="rxt-20250930.xsd#rxt_RepaymentsOfFinancingObligations"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dc8aa25e-756d-44fc-bc66-57d324b49fc8" xlink:to="loc_rxt_RepaymentsOfFinancingObligations_c4b941b1-8060-4642-9b16-96a5d251f79f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6fe0a8af-109a-4a6c-8676-363f7cb9d1f8" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_6fe0a8af-109a-4a6c-8676-363f7cb9d1f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_21d31f32-bb56-419e-932a-d2fa85d76d96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_21d31f32-bb56-419e-932a-d2fa85d76d96" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_9ec18566-4ed9-4cbd-af84-b2afa533f83e" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_9ec18566-4ed9-4cbd-af84-b2afa533f83e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_a0a4e7e4-8674-48fd-9d00-f7b7a9b6b3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_a0a4e7e4-8674-48fd-9d00-f7b7a9b6b3d9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDepreciationAndAmortization_2c14cc18-8cda-44a3-8ccb-0df5564fc380" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherDepreciationAndAmortization"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_OtherDepreciationAndAmortization_2c14cc18-8cda-44a3-8ccb-0df5564fc380" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_a7e48b4c-870b-4337-9147-dc0571af39a4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOperatingLeaseLiability"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLeaseLiability_a7e48b4c-870b-4337-9147-dc0571af39a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfInvestments_1315ab53-8715-4541-847e-6ae5c1511730" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnSaleOfInvestments"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_GainLossOnSaleOfInvestments_1315ab53-8715-4541-847e-6ae5c1511730" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_7276fe4c-f311-42b5-b789-fd74fc30ba68" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_7276fe4c-f311-42b5-b789-fd74fc30ba68" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_39d375dc-891f-4481-9087-5f6e648e8fde" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_39d375dc-891f-4481-9087-5f6e648e8fde" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_ThirdPartyFeesPaidInConnectionWithTheRefinancing_c4ba8e41-5c24-4f31-b190-ee0473269b5f" xlink:href="rxt-20250930.xsd#rxt_ThirdPartyFeesPaidInConnectionWithTheRefinancing"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_rxt_ThirdPartyFeesPaidInConnectionWithTheRefinancing_c4ba8e41-5c24-4f31-b190-ee0473269b5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_37bb6a54-29fb-4a36-a5d2-91af09e9aa4a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_37bb6a54-29fb-4a36-a5d2-91af09e9aa4a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_c08810f6-9ff9-41e1-85e3-2cf935a7be6f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_c08810f6-9ff9-41e1-85e3-2cf935a7be6f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_ba426ecb-b4f1-4a39-b9c4-87d4e8cfd24c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_NetIncomeLoss_ba426ecb-b4f1-4a39-b9c4-87d4e8cfd24c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_e6d1db3f-a615-47bd-a7ce-c60f6948152c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_e6d1db3f-a615-47bd-a7ce-c60f6948152c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_a2cdda36-acd8-4c77-a48d-181127e0ec11" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet_a2cdda36-acd8-4c77-a48d-181127e0ec11" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_AmortizationOfDebtIssuanceCostsAndDiscountsPremium_6f0d1491-a9a8-427e-bd63-ad0cec4c43a2" xlink:href="rxt-20250930.xsd#rxt_AmortizationOfDebtIssuanceCostsAndDiscountsPremium"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_rxt_AmortizationOfDebtIssuanceCostsAndDiscountsPremium_6f0d1491-a9a8-427e-bd63-ad0cec4c43a2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_3e301904-1150-40cc-ac98-e756fa8c2fbc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ImpairmentOfLongLivedAssetsHeldForUse"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsHeldForUse_3e301904-1150-40cc-ac98-e756fa8c2fbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_50362349-2277-49dc-a62d-54ebbefa2ecd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_ShareBasedCompensation_50362349-2277-49dc-a62d-54ebbefa2ecd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_4bc7d480-8c80-4e20-827d-6dc53188e580" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_4bc7d480-8c80-4e20-827d-6dc53188e580" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_FairValueAdjustmentNoteReceivable_2d3ee72b-aa85-4dbf-9d02-c518c7197ae2" xlink:href="rxt-20250930.xsd#rxt_FairValueAdjustmentNoteReceivable"/>
    <link:calculationArc order="20" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_676ef836-f3e7-4d4f-9527-a6930fa4769a" xlink:to="loc_rxt_FairValueAdjustmentNoteReceivable_2d3ee72b-aa85-4dbf-9d02-c518c7197ae2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0e36e133-3a88-4ced-9c7f-4a691496e2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2dce22ae-cbf6-4442-a0a8-b578824ca23f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0e36e133-3a88-4ced-9c7f-4a691496e2c6" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_2dce22ae-cbf6-4442-a0a8-b578824ca23f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_912a1d63-ba29-47d7-8363-a4f00d8287e6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_0e36e133-3a88-4ced-9c7f-4a691496e2c6" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_912a1d63-ba29-47d7-8363-a4f00d8287e6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/NetLossPerShareComputationofBasicandDilutedNetLossPerShareDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#NetLossPerShareComputationofBasicandDilutedNetLossPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/NetLossPerShareComputationofBasicandDilutedNetLossPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_23f0b98a-ede2-46f0-9058-aeef9e01a7c7" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_a3852138-5822-470e-9abb-5f9c466d1271" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_23f0b98a-ede2-46f0-9058-aeef9e01a7c7" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_a3852138-5822-470e-9abb-5f9c466d1271" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/PropertyEquipmentandSoftwarenetScheduleofPropertyEquipmentandSoftwarenetDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#PropertyEquipmentandSoftwarenetScheduleofPropertyEquipmentandSoftwarenetDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/PropertyEquipmentandSoftwarenetScheduleofPropertyEquipmentandSoftwarenetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_7721ffb7-02db-46e7-b52b-1b8d4f97bdc2" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_9baae219-07b0-408e-8659-aec9f4704a23" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_7721ffb7-02db-46e7-b52b-1b8d4f97bdc2" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_9baae219-07b0-408e-8659-aec9f4704a23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_bbdc9e48-634f-4d7e-a153-e733b2363706" xlink:href="rxt-20250930.xsd#rxt_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_7721ffb7-02db-46e7-b52b-1b8d4f97bdc2" xlink:to="loc_rxt_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortizationExcludingConstructionInProgress_bbdc9e48-634f-4d7e-a153-e733b2363706" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_202a8ea4-e0a0-4686-a57f-212225de4b0a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_7721ffb7-02db-46e7-b52b-1b8d4f97bdc2" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_202a8ea4-e0a0-4686-a57f-212225de4b0a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/GoodwillandIntangibleAssetsChangesinCarryingAmountsofGoodwillbyReportableSegmentDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#GoodwillandIntangibleAssetsChangesinCarryingAmountsofGoodwillbyReportableSegmentDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/GoodwillandIntangibleAssetsChangesinCarryingAmountsofGoodwillbyReportableSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_4a56aa34-6d87-4a72-9ddf-5901d1197b12" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_0d080e1d-706d-4265-9269-f50638534b77" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Goodwill_4a56aa34-6d87-4a72-9ddf-5901d1197b12" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_0d080e1d-706d-4265-9269-f50638534b77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_dfab6afe-66cf-4402-acdd-f2a674268f13" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Goodwill_4a56aa34-6d87-4a72-9ddf-5901d1197b12" xlink:to="loc_us-gaap_GoodwillGross_dfab6afe-66cf-4402-acdd-f2a674268f13" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7485d0ca-1fdc-4990-ab4e-07756117ecae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_10269480-f807-408b-a266-5edb344877dd" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7485d0ca-1fdc-4990-ab4e-07756117ecae" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_10269480-f807-408b-a266-5edb344877dd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c5c7733e-0a69-41fb-81bc-3ce283cc8666" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7485d0ca-1fdc-4990-ab4e-07756117ecae" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_c5c7733e-0a69-41fb-81bc-3ce283cc8666" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_6dcb1025-2626-4d38-ad5d-f971b8c981ed" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b6757891-0f1a-4ddc-a101-97e2ecda9507" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_6dcb1025-2626-4d38-ad5d-f971b8c981ed" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_b6757891-0f1a-4ddc-a101-97e2ecda9507" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_97fd00c8-155e-4498-9585-55be994be4fc" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_6dcb1025-2626-4d38-ad5d-f971b8c981ed" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_97fd00c8-155e-4498-9585-55be994be4fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_488a3739-35e2-4a62-811c-9f662d5d70e5" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a113530c-c08e-4b8b-ab7e-80d789c9bef9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_488a3739-35e2-4a62-811c-9f662d5d70e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_a113530c-c08e-4b8b-ab7e-80d789c9bef9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_5663317e-75a7-4715-b9b2-d672278e5825" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_488a3739-35e2-4a62-811c-9f662d5d70e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_5663317e-75a7-4715-b9b2-d672278e5825" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails_1" xlink:type="simple" xlink:href="rxt-20250930.xsd#GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails_1"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/GoodwillandIntangibleAssetsIntangibleAssetsOtherThanGoodwillDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5da4bb44-199a-412e-9dc3-0e86bd508bd3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_d30602c3-5da1-4c3f-94e9-535753ba042c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5da4bb44-199a-412e-9dc3-0e86bd508bd3" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_d30602c3-5da1-4c3f-94e9-535753ba042c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_470f9d7b-827e-4c8d-8ffa-e9698b630acb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_5da4bb44-199a-412e-9dc3-0e86bd508bd3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_470f9d7b-827e-4c8d-8ffa-e9698b630acb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/DebtScheduleofDebtDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#DebtScheduleofDebtDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/DebtScheduleofDebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_753f1fb6-ca8a-4eb9-8100-8beff5e93d96" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_6e353a44-c3be-4cd8-97a2-b0b80ba1b193" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_753f1fb6-ca8a-4eb9-8100-8beff5e93d96" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_6e353a44-c3be-4cd8-97a2-b0b80ba1b193" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_71b7e56f-81e1-4645-be6c-aba8038da7ce" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_753f1fb6-ca8a-4eb9-8100-8beff5e93d96" xlink:to="loc_us-gaap_LongTermDebtCurrent_71b7e56f-81e1-4645-be6c-aba8038da7ce" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/DebtScheduleofDebtDetails_1" xlink:type="simple" xlink:href="rxt-20250930.xsd#DebtScheduleofDebtDetails_1"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/DebtScheduleofDebtDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_eea4f017-a417-47dc-965c-c3bd9589f95f" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_289ebf96-a5ce-4bdc-b720-968659707301" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea4f017-a417-47dc-965c-c3bd9589f95f" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_289ebf96-a5ce-4bdc-b720-968659707301" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1210b844-7c13-4000-8f6c-edf6850477a1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_eea4f017-a417-47dc-965c-c3bd9589f95f" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1210b844-7c13-4000-8f6c-edf6850477a1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/ShareBasedCompensationScheduleofShareBasedCompensationExpenseDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#ShareBasedCompensationScheduleofShareBasedCompensationExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/ShareBasedCompensationScheduleofShareBasedCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_de3da561-6b03-4939-93e9-3fdcffcda38a" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_9143f0cd-c171-4e85-a006-d653e0a5200c" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_de3da561-6b03-4939-93e9-3fdcffcda38a" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_9143f0cd-c171-4e85-a006-d653e0a5200c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_25e62de2-50dc-47cd-82fb-cbd77a452fbb" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_de3da561-6b03-4939-93e9-3fdcffcda38a" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_25e62de2-50dc-47cd-82fb-cbd77a452fbb" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/DerivativesDerivativesPresentedonaNetAssetandNetLiabilitybasisDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#DerivativesDerivativesPresentedonaNetAssetandNetLiabilitybasisDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/DerivativesDerivativesPresentedonaNetAssetandNetLiabilitybasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_f8db6e7d-a3f4-4392-a872-2c8a46df3be1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_e15e444b-3440-438c-97fb-176918192b7b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_f8db6e7d-a3f4-4392-a872-2c8a46df3be1" xlink:to="loc_us-gaap_DerivativeLiabilityNotOffsetPolicyElectionDeduction_e15e444b-3440-438c-97fb-176918192b7b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_45f2e05a-0130-4a5e-946f-39caa14d5c72" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_f8db6e7d-a3f4-4392-a872-2c8a46df3be1" xlink:to="loc_us-gaap_DerivativeLiabilities_45f2e05a-0130-4a5e-946f-39caa14d5c72" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_c8c64b73-1484-46cc-a83f-f6a30da05c1d" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_e3e32c73-dd91-4d38-b37c-a39d017cb9f3" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_c8c64b73-1484-46cc-a83f-f6a30da05c1d" xlink:to="loc_us-gaap_DerivativeAssets_e3e32c73-dd91-4d38-b37c-a39d017cb9f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_b7902bd3-0407-4560-b240-00b3d0ac0b71" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DerivativeAssetFairValueAfterOffsetAndDeductionSubjectToMasterNettingArrangement_c8c64b73-1484-46cc-a83f-f6a30da05c1d" xlink:to="loc_us-gaap_DerivativeAssetNotOffsetPolicyElectionDeduction_b7902bd3-0407-4560-b240-00b3d0ac0b71" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.rackspace.com/role/SegmentReportingReconciliationofRevenueandGrossProfitsfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="rxt-20250930.xsd#SegmentReportingReconciliationofRevenueandGrossProfitsfromSegmentstoConsolidatedDetails"/>
  <link:calculationLink xlink:role="http://www.rackspace.com/role/SegmentReportingReconciliationofRevenueandGrossProfitsfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_e362e327-db98-4421-8408-61b98e7ed074" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e45e9683-df54-42df-9267-87928bcc7cc9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_e362e327-db98-4421-8408-61b98e7ed074" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_e45e9683-df54-42df-9267-87928bcc7cc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_aa2ccaa6-d31c-43cf-bf35-d3181840dbaa" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_e362e327-db98-4421-8408-61b98e7ed074" xlink:to="loc_us-gaap_CostOfRevenue_aa2ccaa6-d31c-43cf-bf35-d3181840dbaa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostOfOperatingRevenue_acd694b3-5d0e-40d0-b35c-7c6b735ba6d1" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherCostOfOperatingRevenue"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_e362e327-db98-4421-8408-61b98e7ed074" xlink:to="loc_us-gaap_OtherCostOfOperatingRevenue_acd694b3-5d0e-40d0-b35c-7c6b735ba6d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_dcf7e924-97ff-4ed2-ad8f-6b50901e2255" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_e362e327-db98-4421-8408-61b98e7ed074" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_dcf7e924-97ff-4ed2-ad8f-6b50901e2255" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_dda77e93-02dc-4c24-83a4-651599dc9e3b" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_dda77e93-02dc-4c24-83a4-651599dc9e3b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_8ac8adf4-f5a7-433d-bbb9-4226d6ca4cae" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_8ac8adf4-f5a7-433d-bbb9-4226d6ca4cae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_4d35bb6a-8665-46aa-bb81-7ced37d399f4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_4d35bb6a-8665-46aa-bb81-7ced37d399f4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_b46965b8-43b1-4adf-97b2-9fd73bb6dbc9" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_b46965b8-43b1-4adf-97b2-9fd73bb6dbc9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_RestructuringAndTransformationCosts_2fa34f6e-15bd-4610-8e86-582bab552fd6" xlink:href="rxt-20250930.xsd#rxt_RestructuringAndTransformationCosts"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_rxt_RestructuringAndTransformationCosts_2fa34f6e-15bd-4610-8e86-582bab552fd6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_bfc336b8-55b0-48b2-803e-4ac3177d0468" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_bfc336b8-55b0-48b2-803e-4ac3177d0468" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_8067a6c8-da69-4e9b-a7c9-3c86b3704cda" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_OperatingIncomeLoss_8067a6c8-da69-4e9b-a7c9-3c86b3704cda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_AssetsImpairmentChargesExcludingGoodwill_c7be08f3-20f4-4aaf-a832-325197f4a8cd" xlink:href="rxt-20250930.xsd#rxt_AssetsImpairmentChargesExcludingGoodwill"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_rxt_AssetsImpairmentChargesExcludingGoodwill_c7be08f3-20f4-4aaf-a832-325197f4a8cd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_TransactionRelatedAdjustmentsNet_061e0fa8-501e-4b57-9aaa-99b26aa0e2db" xlink:href="rxt-20250930.xsd#rxt_TransactionRelatedAdjustmentsNet"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_rxt_TransactionRelatedAdjustmentsNet_061e0fa8-501e-4b57-9aaa-99b26aa0e2db" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_rxt_HostedExchangeIncidentExpenses_e8dd8ab6-2030-4f7d-a2d2-fedabf76a979" xlink:href="rxt-20250930.xsd#rxt_HostedExchangeIncidentExpenses"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_rxt_HostedExchangeIncidentExpenses_e8dd8ab6-2030-4f7d-a2d2-fedabf76a979" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_7d174254-d275-46f4-a25e-680f8acf6dc4" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_InterestExpenseNonoperating_7d174254-d275-46f4-a25e-680f8acf6dc4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_5b2b51cd-b6f0-4abf-a890-b0058294a153" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnInvestments"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_e394ee1e-980c-4301-99b0-de333632b2c6" xlink:to="loc_us-gaap_GainLossOnInvestments_5b2b51cd-b6f0-4abf-a890-b0058294a153" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
