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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:31ca7510-4880-4066-a01e-0a593a598bb5,g:761acdd1-ef14-4330-9687-30045259a4d0-->
<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.gartner.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="it-20240630.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_bd1c8f3d-ddbf-429e-814b-2b87c07d3acd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_903b4bf8-ba43-4e43-9c5c-77fbbb528af2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_bd1c8f3d-ddbf-429e-814b-2b87c07d3acd" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_903b4bf8-ba43-4e43-9c5c-77fbbb528af2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e7af67f4-20b2-42af-a893-6ff3f7ae20c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_bd1c8f3d-ddbf-429e-814b-2b87c07d3acd" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_e7af67f4-20b2-42af-a893-6ff3f7ae20c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_87fac13b-5d41-48d2-a86d-1ffeebce309f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_bd1c8f3d-ddbf-429e-814b-2b87c07d3acd" xlink:to="loc_us-gaap_LongTermDebtCurrent_87fac13b-5d41-48d2-a86d-1ffeebce309f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_a70c685e-9524-427a-935e-41ac5c0fa59d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_10e6665c-4047-45a4-94aa-83229045882e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a70c685e-9524-427a-935e-41ac5c0fa59d" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_10e6665c-4047-45a4-94aa-83229045882e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDeferredCostsNet_543b7459-556b-435a-8c6e-c3083994b9bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherDeferredCostsNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a70c685e-9524-427a-935e-41ac5c0fa59d" xlink:to="loc_us-gaap_OtherDeferredCostsNet_543b7459-556b-435a-8c6e-c3083994b9bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_edf4faee-aa8b-49e2-a828-63a343751af6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a70c685e-9524-427a-935e-41ac5c0fa59d" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_edf4faee-aa8b-49e2-a828-63a343751af6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_38b68be2-9c02-4baa-a4c1-af493aa96a0a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_a70c685e-9524-427a-935e-41ac5c0fa59d" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_38b68be2-9c02-4baa-a4c1-af493aa96a0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_a70de2d6-e86d-4796-aa69-3af72491b4a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_04fe9e12-2972-4d3f-8ec9-4a2e3e594364" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_a70de2d6-e86d-4796-aa69-3af72491b4a3" xlink:to="loc_us-gaap_LiabilitiesCurrent_04fe9e12-2972-4d3f-8ec9-4a2e3e594364" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_adb1621b-7cd5-41cb-a7ab-8609bf645d39" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_a70de2d6-e86d-4796-aa69-3af72491b4a3" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_adb1621b-7cd5-41cb-a7ab-8609bf645d39" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_8f0521ed-1f71-4fb1-8c9e-8d0b5b7a989f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_a70de2d6-e86d-4796-aa69-3af72491b4a3" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_8f0521ed-1f71-4fb1-8c9e-8d0b5b7a989f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_f98f8010-4ad6-4a07-9e06-310d49f03772" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_a70de2d6-e86d-4796-aa69-3af72491b4a3" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_f98f8010-4ad6-4a07-9e06-310d49f03772" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_2cd89704-de28-437d-9e5d-5d35ced8e6f1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_PreferredStockValue_2cd89704-de28-437d-9e5d-5d35ced8e6f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_3415da2e-3600-4fb3-823e-36830530ee51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_CommonStockValue_3415da2e-3600-4fb3-823e-36830530ee51" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_20245503-dd72-4783-b394-a77be4b9503a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_AdditionalPaidInCapital_20245503-dd72-4783-b394-a77be4b9503a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_6a746a81-5880-4513-9408-341d6326b173" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_6a746a81-5880-4513-9408-341d6326b173" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c16bac10-1cfc-4241-b7f6-418fc74b8cc4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c16bac10-1cfc-4241-b7f6-418fc74b8cc4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonValue_e53516c1-feaf-49b7-87b5-5c7a5ca5bbd1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_6670157d-6039-4c8d-b088-78df8061cd27" xlink:to="loc_us-gaap_TreasuryStockCommonValue_e53516c1-feaf-49b7-87b5-5c7a5ca5bbd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_f7b29685-b058-4420-8fc5-4b5d5391757d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_AssetsCurrent_f7b29685-b058-4420-8fc5-4b5d5391757d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_5d7928c0-af39-48f8-a076-3c1bfb499747" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_5d7928c0-af39-48f8-a076-3c1bfb499747" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_d8f84369-ef9b-45d5-8b31-175b628c5f53" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_d8f84369-ef9b-45d5-8b31-175b628c5f53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_3a766989-563e-45c1-817e-5462f118015b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_Goodwill_3a766989-563e-45c1-817e-5462f118015b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_6e9b2ce4-010b-4ebc-b599-e45a92f9d7be" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_6e9b2ce4-010b-4ebc-b599-e45a92f9d7be" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_fbfcf661-2d41-4782-bf03-2aa05f9a5b99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_de3cf55e-cb7a-4f04-89d6-2c7b1b7929a0" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_fbfcf661-2d41-4782-bf03-2aa05f9a5b99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_dfa3834c-939c-462e-83ed-b4c0a9eb5a9d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_7220c8a5-8115-40d3-b63d-85196e24fb18" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_dfa3834c-939c-462e-83ed-b4c0a9eb5a9d" xlink:to="loc_us-gaap_Liabilities_7220c8a5-8115-40d3-b63d-85196e24fb18" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_df743653-d388-4d0c-8751-c14c6cfb8cd8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_dfa3834c-939c-462e-83ed-b4c0a9eb5a9d" xlink:to="loc_us-gaap_StockholdersEquity_df743653-d388-4d0c-8751-c14c6cfb8cd8" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/CondensedConsolidatedStatementsofOperations" xlink:type="simple" xlink:href="it-20240630.xsd#CondensedConsolidatedStatementsofOperations"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/CondensedConsolidatedStatementsofOperations" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_2c276864-dcbb-4caa-b98d-0b68d4b703cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_a373ffc5-c88b-4fa9-8e93-b31c9105ed77" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_2c276864-dcbb-4caa-b98d-0b68d4b703cf" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_a373ffc5-c88b-4fa9-8e93-b31c9105ed77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_fe899509-4edb-4532-8181-133e5610ce28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_2c276864-dcbb-4caa-b98d-0b68d4b703cf" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_fe899509-4edb-4532-8181-133e5610ce28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_034348d2-1dbd-468e-834f-e1be9cd502e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_34de4c56-6b7e-4d4f-bbeb-9c427e119c3f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_034348d2-1dbd-468e-834f-e1be9cd502e4" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_34de4c56-6b7e-4d4f-bbeb-9c427e119c3f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_f6b94c83-9883-45ad-be70-9b471afc3bec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_034348d2-1dbd-468e-834f-e1be9cd502e4" xlink:to="loc_us-gaap_CostsAndExpenses_f6b94c83-9883-45ad-be70-9b471afc3bec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_99ac9b49-7a29-43a4-9f1a-ebb8ff9fc74a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_99ac9b49-7a29-43a4-9f1a-ebb8ff9fc74a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_b0d8446e-99b8-45cf-83f2-f0fd0b7ae350" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_us-gaap_Depreciation_b0d8446e-99b8-45cf-83f2-f0fd0b7ae350" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_87824a8c-0a29-4bab-8190-38afae809118" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_87824a8c-0a29-4bab-8190-38afae809118" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_1399496c-da3b-49eb-ab6b-b25566b4c171" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_1399496c-da3b-49eb-ab6b-b25566b4c171" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_05782eb7-9cc9-4ff3-9495-4f26fa4c359b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_05782eb7-9cc9-4ff3-9495-4f26fa4c359b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_it_BusinessCombinationAcquisitionandIntegrationRelatedCosts_8630d0e7-7976-43c2-9f8c-1336a7bb4171" xlink:href="it-20240630.xsd#it_BusinessCombinationAcquisitionandIntegrationRelatedCosts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_beef39ba-ba7a-4588-a415-99ec47a2005c" xlink:to="loc_it_BusinessCombinationAcquisitionandIntegrationRelatedCosts_8630d0e7-7976-43c2-9f8c-1336a7bb4171" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b807fab5-e574-4a3c-bdfe-a8562341c1f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_ac920f9f-ccdc-40b7-ae6b-c681cae7c08d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b807fab5-e574-4a3c-bdfe-a8562341c1f6" xlink:to="loc_us-gaap_InterestExpenseNonoperating_ac920f9f-ccdc-40b7-ae6b-c681cae7c08d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_a1acf33a-abf8-4183-887f-64e0c15099b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b807fab5-e574-4a3c-bdfe-a8562341c1f6" xlink:to="loc_us-gaap_OperatingIncomeLoss_a1acf33a-abf8-4183-887f-64e0c15099b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9973dfa4-9fc7-4767-bfdb-5dabc3092507" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b807fab5-e574-4a3c-bdfe-a8562341c1f6" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9973dfa4-9fc7-4767-bfdb-5dabc3092507" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuredEventGainLoss_d6667665-bb69-4748-932d-70724066f178" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InsuredEventGainLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b807fab5-e574-4a3c-bdfe-a8562341c1f6" xlink:to="loc_us-gaap_InsuredEventGainLoss_d6667665-bb69-4748-932d-70724066f178" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="it-20240630.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_eebf546d-09ea-4b3e-8d7b-3ad6a61b4444" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_43c4e3cb-b261-4217-9100-504f2e423786" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_eebf546d-09ea-4b3e-8d7b-3ad6a61b4444" xlink:to="loc_us-gaap_NetIncomeLoss_43c4e3cb-b261-4217-9100-504f2e423786" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_6e4d960b-2b6d-4a4a-b3a1-d4fc9a52d9b8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_eebf546d-09ea-4b3e-8d7b-3ad6a61b4444" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_6e4d960b-2b6d-4a4a-b3a1-d4fc9a52d9b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_cc36a118-b9a0-41dc-8d62-5ae9da8aec18" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_bbf9a53d-ee9d-4fb3-b31b-62cbde84c274" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_cc36a118-b9a0-41dc-8d62-5ae9da8aec18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_bbf9a53d-ee9d-4fb3-b31b-62cbde84c274" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_6144e3e1-9294-4acc-acbd-23efbc980a83" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_cc36a118-b9a0-41dc-8d62-5ae9da8aec18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent_6144e3e1-9294-4acc-acbd-23efbc980a83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_8b6078e2-6561-419c-a843-85235ed1936a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_cc36a118-b9a0-41dc-8d62-5ae9da8aec18" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_8b6078e2-6561-419c-a843-85235ed1936a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="it-20240630.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_07a0c74b-8882-4aa6-88ae-76d0bf44ed44" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet_07a0c74b-8882-4aa6-88ae-76d0bf44ed44" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_6c4a0338-98e2-4a01-8143-f2084ea8c1b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_6c4a0338-98e2-4a01-8143-f2084ea8c1b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_19c64a72-440f-4e38-a882-b9e0bc83c075" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_19c64a72-440f-4e38-a882-b9e0bc83c075" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_09ff6086-1563-4c4a-a819-30f0a8e79ddd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_09ff6086-1563-4c4a-a819-30f0a8e79ddd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_0fa0a46c-cd44-4254-82b0-38d2f5a5ea94" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_0fa0a46c-cd44-4254-82b0-38d2f5a5ea94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_a91194a6-402b-4bb0-bb33-778d9b218ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_a91194a6-402b-4bb0-bb33-778d9b218ed3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_22867955-339b-4b51-9d71-15bfd9d2207c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_DepreciationAndAmortization_22867955-339b-4b51-9d71-15bfd9d2207c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredCharges_0cf9164f-d9e8-4136-bd1f-59d9ee80ae2f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDeferredCharges"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredCharges_0cf9164f-d9e8-4136-bd1f-59d9ee80ae2f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_f3ca9c2f-bf51-450f-8b53-b2daae0cd5bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_f3ca9c2f-bf51-450f-8b53-b2daae0cd5bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_6564cc89-c690-4c39-aadf-fe01b4bb3a8a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_6564cc89-c690-4c39-aadf-fe01b4bb3a8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_3c537bbf-ae91-40c0-82d6-9218e1d4cfbc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_3c537bbf-ae91-40c0-82d6-9218e1d4cfbc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_c4de3077-57d0-46fe-8b17-e2f261fc5e01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_c4de3077-57d0-46fe-8b17-e2f261fc5e01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_3a190b7f-13d3-47fa-abc3-6af7f2a1bb6b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_ShareBasedCompensation_3a190b7f-13d3-47fa-abc3-6af7f2a1bb6b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_it_OperatingLeaseRightOfUseAssetReductionInCarryingAmount_e9f429e8-af8b-4cd2-9794-3438224ee61e" xlink:href="it-20240630.xsd#it_OperatingLeaseRightOfUseAssetReductionInCarryingAmount"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_it_OperatingLeaseRightOfUseAssetReductionInCarryingAmount_e9f429e8-af8b-4cd2-9794-3438224ee61e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c23c7fd0-d1a7-438f-8c7b-b526343a37d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_4f570b23-c038-463e-ab41-d77a408d4c38" xlink:to="loc_us-gaap_NetIncomeLoss_c23c7fd0-d1a7-438f-8c7b-b526343a37d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_d9d50c75-415e-4fc1-8df0-a2230452c2d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c0b944c8-243f-4cf5-ba46-1537c3be4f1e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_d9d50c75-415e-4fc1-8df0-a2230452c2d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_c0b944c8-243f-4cf5-ba46-1537c3be4f1e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f07a06f2-4a9e-42bf-91d5-8bf7faeeabf5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_d9d50c75-415e-4fc1-8df0-a2230452c2d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_f07a06f2-4a9e-42bf-91d5-8bf7faeeabf5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_161345e2-d136-4ba5-b182-12227efdadab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_d9d50c75-415e-4fc1-8df0-a2230452c2d5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_161345e2-d136-4ba5-b182-12227efdadab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_57528f1a-de62-4490-91b1-0efd0d7ae682" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_57528f1a-de62-4490-91b1-0efd0d7ae682" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_cda313d7-4852-437e-89e9-256da8cc9fb3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions_cda313d7-4852-437e-89e9-256da8cc9fb3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_aca69152-815e-49e3-a9e5-fe5f2120b9f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_aca69152-815e-49e3-a9e5-fe5f2120b9f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_2dfb13d4-2f82-4160-97da-41bb61254b8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_2dfb13d4-2f82-4160-97da-41bb61254b8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_efe7f1ff-af3e-4111-9159-2144a3b1f4d1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_31390492-383e-44a1-aeb9-f85c00f3589e" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_efe7f1ff-af3e-4111-9159-2144a3b1f4d1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5ddfde5f-a1dd-432e-80cd-97043c03c135" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_f80c344f-3724-4e7a-92cb-ebc3a5ed58fe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromDivestitureOfBusinesses"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5ddfde5f-a1dd-432e-80cd-97043c03c135" xlink:to="loc_us-gaap_ProceedsFromDivestitureOfBusinesses_f80c344f-3724-4e7a-92cb-ebc3a5ed58fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_0aca28e4-9704-431e-bfe8-94e9e5cbc5b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5ddfde5f-a1dd-432e-80cd-97043c03c135" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_0aca28e4-9704-431e-bfe8-94e9e5cbc5b7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForCapitalImprovements_123ce2e1-e0ce-4899-aea1-927c7e474645" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForCapitalImprovements"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_5ddfde5f-a1dd-432e-80cd-97043c03c135" xlink:to="loc_us-gaap_PaymentsForCapitalImprovements_123ce2e1-e0ce-4899-aea1-927c7e474645" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/BusinessandBasisofPresentationCashandCashEquivalentsandRestrictedCashDetails" xlink:type="simple" xlink:href="it-20240630.xsd#BusinessandBasisofPresentationCashandCashEquivalentsandRestrictedCashDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/BusinessandBasisofPresentationCashandCashEquivalentsandRestrictedCashDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_94231f49-e17b-4e66-abe0-69c1d42255c0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_17da31ad-fcc7-4777-9e44-049412fa19fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_94231f49-e17b-4e66-abe0-69c1d42255c0" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_17da31ad-fcc7-4777-9e44-049412fa19fb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_578d5bb4-e0fb-480b-bd80-187388a031ff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_94231f49-e17b-4e66-abe0-69c1d42255c0" xlink:to="loc_us-gaap_RestrictedCashCurrent_578d5bb4-e0fb-480b-bd80-187388a031ff" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/GoodwillandIntangibleAssetsCarryingAmountsofAmortizableIntangibleAssetsDetails" xlink:type="simple" xlink:href="it-20240630.xsd#GoodwillandIntangibleAssetsCarryingAmountsofAmortizableIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/GoodwillandIntangibleAssetsCarryingAmountsofAmortizableIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_a3ac3692-83dc-4c26-8d82-883580160d52" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_18c19d3c-16c5-44a1-acb3-65a79be767c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_FiniteLivedIntangibleAssetsNet_a3ac3692-83dc-4c26-8d82-883580160d52" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_18c19d3c-16c5-44a1-acb3-65a79be767c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_bb4ab3e1-8291-4aa8-985c-e126f4c30d42" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_FiniteLivedIntangibleAssetsNet_a3ac3692-83dc-4c26-8d82-883580160d52" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_bb4ab3e1-8291-4aa8-985c-e126f4c30d42" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/GoodwillandIntangibleAssetsEstimatedFutureAmortizationExpenseByYearFromAmortizableIntangiblesDetails" xlink:type="simple" xlink:href="it-20240630.xsd#GoodwillandIntangibleAssetsEstimatedFutureAmortizationExpenseByYearFromAmortizableIntangiblesDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/GoodwillandIntangibleAssetsEstimatedFutureAmortizationExpenseByYearFromAmortizableIntangiblesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_5c1b3700-5e9f-4556-9359-73c80e15b612" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_5c1b3700-5e9f-4556-9359-73c80e15b612" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1e7dee0b-e071-4fe0-bb58-4d8017f1a4a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_1e7dee0b-e071-4fe0-bb58-4d8017f1a4a0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3a871aa8-e6e4-47d6-b259-236362c5e6c3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_3a871aa8-e6e4-47d6-b259-236362c5e6c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_f587f626-45ac-4f16-a1ee-125e45305152" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_f587f626-45ac-4f16-a1ee-125e45305152" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3404c646-d891-4264-bf70-c7916c984b77" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3404c646-d891-4264-bf70-c7916c984b77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_it_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_88cf1823-e822-40d0-ae25-d9a091f0be24" xlink:href="it-20240630.xsd#it_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_e3bdce99-7a53-4413-8109-d7eb531e490c" xlink:to="loc_it_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_88cf1823-e822-40d0-ae25-d9a091f0be24" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/RevenueandRelatedMattersScheduleofContractwithCustomerAssetandLiabilityDetails" xlink:type="simple" xlink:href="it-20240630.xsd#RevenueandRelatedMattersScheduleofContractwithCustomerAssetandLiabilityDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/RevenueandRelatedMattersScheduleofContractwithCustomerAssetandLiabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_b7b4874e-f45e-4aef-b4e6-e575fe407fc0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_38eb6cdd-f8ed-4384-b260-654f9c192725" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiability_b7b4874e-f45e-4aef-b4e6-e575fe407fc0" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_38eb6cdd-f8ed-4384-b260-654f9c192725" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_d67269cc-0ce6-45b6-841e-25de580f141a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ContractWithCustomerLiability_b7b4874e-f45e-4aef-b4e6-e575fe407fc0" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_d67269cc-0ce6-45b6-841e-25de580f141a" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/ComputationofEarningsPerShareDetails" xlink:type="simple" xlink:href="it-20240630.xsd#ComputationofEarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/ComputationofEarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae1b71fa-3dec-4920-bdb6-aa2d4a0f132e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_29fa8aad-1573-4a8c-97a2-9571713a6fe2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae1b71fa-3dec-4920-bdb6-aa2d4a0f132e" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_29fa8aad-1573-4a8c-97a2-9571713a6fe2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_95d1cb26-bf91-437c-ba5c-31d63d5fec3d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ae1b71fa-3dec-4920-bdb6-aa2d4a0f132e" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_95d1cb26-bf91-437c-ba5c-31d63d5fec3d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/SegmentInformationReconciliationofSegmentGrossContributiontoNetIncomeDetails" xlink:type="simple" xlink:href="it-20240630.xsd#SegmentInformationReconciliationofSegmentGrossContributiontoNetIncomeDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/SegmentInformationReconciliationofSegmentGrossContributiontoNetIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_bdc277ef-d7e2-45ae-83f2-162682e2e0c2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_bdc277ef-d7e2-45ae-83f2-162682e2e0c2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_it_BusinessCombinationAcquisitionandIntegrationRelatedCosts_bf5cedda-3ef2-4ce3-9ade-efce6ecea93d" xlink:href="it-20240630.xsd#it_BusinessCombinationAcquisitionandIntegrationRelatedCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:to="loc_it_BusinessCombinationAcquisitionandIntegrationRelatedCosts_bf5cedda-3ef2-4ce3-9ade-efce6ecea93d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_5847c658-b19b-4fc9-83e2-72a6ad8c25bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_5847c658-b19b-4fc9-83e2-72a6ad8c25bc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_20d1a613-73d6-40b2-b5fe-2f4bb9d9b737" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_20d1a613-73d6-40b2-b5fe-2f4bb9d9b737" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_13ef7182-5daa-492d-9553-715edfdfc1d7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_6b6a8d19-5a5f-4803-9cb3-af9147816f45" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_13ef7182-5daa-492d-9553-715edfdfc1d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c7c1897d-9b50-4d8e-afe5-740092743072" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_1a9949b5-1d97-4fca-b5c2-551ba07fedcc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7c1897d-9b50-4d8e-afe5-740092743072" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_1a9949b5-1d97-4fca-b5c2-551ba07fedcc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_it_InterestExpenseandOtherNonoperatingIncome_e8515029-26ab-4a36-a04d-51d2aad474fc" xlink:href="it-20240630.xsd#it_InterestExpenseandOtherNonoperatingIncome"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7c1897d-9b50-4d8e-afe5-740092743072" xlink:to="loc_it_InterestExpenseandOtherNonoperatingIncome_e8515029-26ab-4a36-a04d-51d2aad474fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_5beaac3b-9d28-4aa2-a5d5-edfb2472a5b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7c1897d-9b50-4d8e-afe5-740092743072" xlink:to="loc_us-gaap_OperatingIncomeLoss_5beaac3b-9d28-4aa2-a5d5-edfb2472a5b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InsuredEventGainLoss_3ada89b0-6db3-4b21-a5a8-3382a5d7a7b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InsuredEventGainLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_c7c1897d-9b50-4d8e-afe5-740092743072" xlink:to="loc_us-gaap_InsuredEventGainLoss_3ada89b0-6db3-4b21-a5a8-3382a5d7a7b3" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/DebtBorrowingsDetails" xlink:type="simple" xlink:href="it-20240630.xsd#DebtBorrowingsDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/DebtBorrowingsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_c9a1a41d-a9e7-440d-90c8-06c5f452f29c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_356b376e-1da2-4576-aac0-d3b863412250" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_DebtLongtermAndShorttermCombinedAmount_c9a1a41d-a9e7-440d-90c8-06c5f452f29c" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_356b376e-1da2-4576-aac0-d3b863412250" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_89614558-0ec6-4ca5-9383-63597dde4b94" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount_c9a1a41d-a9e7-440d-90c8-06c5f452f29c" xlink:to="loc_us-gaap_DebtIssuanceCostsLineOfCreditArrangementsNet_89614558-0ec6-4ca5-9383-63597dde4b94" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/EquityChangesinAOCILbyComponentDetails" xlink:type="simple" xlink:href="it-20240630.xsd#EquityChangesinAOCILbyComponentDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/EquityChangesinAOCILbyComponentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_6dd8f449-53fa-4dd2-b47b-b5b7844694e6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_a4e31e9c-fe2c-4c63-9dd8-cb521226771d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_6dd8f449-53fa-4dd2-b47b-b5b7844694e6" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_a4e31e9c-fe2c-4c63-9dd8-cb521226771d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_484ffe2b-8a4e-4ef0-91c4-94d140ac84a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_6dd8f449-53fa-4dd2-b47b-b5b7844694e6" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_484ffe2b-8a4e-4ef0-91c4-94d140ac84a2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/LeasesNetLeaseCostsDetails" xlink:type="simple" xlink:href="it-20240630.xsd#LeasesNetLeaseCostsDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/LeasesNetLeaseCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_b613fb1a-2382-45a3-bb44-4c94d5262457" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_c7bc7015-9d6f-4b5a-ac50-489de3a3b679" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_b613fb1a-2382-45a3-bb44-4c94d5262457" xlink:to="loc_us-gaap_OperatingLeaseCost_c7bc7015-9d6f-4b5a-ac50-489de3a3b679" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_44239f8a-3543-43f9-ad5b-cb0eac73fb55" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_b613fb1a-2382-45a3-bb44-4c94d5262457" xlink:to="loc_us-gaap_VariableLeaseCost_44239f8a-3543-43f9-ad5b-cb0eac73fb55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_db7b13b2-aeae-47da-92b3-5cb87a1bd420" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_b613fb1a-2382-45a3-bb44-4c94d5262457" xlink:to="loc_us-gaap_SubleaseIncome_db7b13b2-aeae-47da-92b3-5cb87a1bd420" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.gartner.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:type="simple" xlink:href="it-20240630.xsd#LeasesSupplementalBalanceSheetInformationDetails"/>
  <link:calculationLink xlink:role="http://www.gartner.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_b58dcb6a-4c70-45b7-94ae-f938b317fe16" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_b2a3be0f-9a8c-460b-aa9e-6eef71e773e5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_b58dcb6a-4c70-45b7-94ae-f938b317fe16" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_b2a3be0f-9a8c-460b-aa9e-6eef71e773e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_e191929f-20e2-4687-a9d2-ada48bd0fa17" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.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_OperatingLeaseLiability_b58dcb6a-4c70-45b7-94ae-f938b317fe16" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_e191929f-20e2-4687-a9d2-ada48bd0fa17" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
