<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.5b -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#Cover" roleURI="http://quantumxlabs.xyz/role/Cover" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedBalanceSheets" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedBalanceSheets" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedBalanceSheetsParenthetical" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedBalanceSheetsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedStatementsOfOperations" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfOperations" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedStatementsOfChangesInShareholdersEquity" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfChangesInShareholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedStatementsOfCashFlows" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfCashFlows" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#InterimCondensedConsolidatedStatementsOfCashFlowsParenthetical" roleURI="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfCashFlowsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#General" roleURI="http://quantumxlabs.xyz/role/General" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SignificantAccountingPolicies" roleURI="http://quantumxlabs.xyz/role/SignificantAccountingPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#DiscontinuedOperations" roleURI="http://quantumxlabs.xyz/role/DiscontinuedOperations" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#LoanToFormerParentCompany" roleURI="http://quantumxlabs.xyz/role/LoanToFormerParentCompany" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#GoodwillAndIntangibleAssetsNet" roleURI="http://quantumxlabs.xyz/role/GoodwillAndIntangibleAssetsNet" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#BusinessCombination" roleURI="http://quantumxlabs.xyz/role/BusinessCombination" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#Loans" roleURI="http://quantumxlabs.xyz/role/Loans" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#FinancialInstrumentsAtFairValue" roleURI="http://quantumxlabs.xyz/role/FinancialInstrumentsAtFairValue" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#CommitmentsAndContingencies" roleURI="http://quantumxlabs.xyz/role/CommitmentsAndContingencies" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ShareholdersEquity" roleURI="http://quantumxlabs.xyz/role/ShareholdersEquity" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#EarningLossPerShare" roleURI="http://quantumxlabs.xyz/role/EarningLossPerShare" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SegmentReporting" roleURI="http://quantumxlabs.xyz/role/SegmentReporting" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SubsequentEvents" roleURI="http://quantumxlabs.xyz/role/SubsequentEvents" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SignificantAccountingPoliciesPolicies" roleURI="http://quantumxlabs.xyz/role/SignificantAccountingPoliciesPolicies" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#DiscontinuedOperationsTables" roleURI="http://quantumxlabs.xyz/role/DiscontinuedOperationsTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#GoodwillAndIntangibleAssetsNetTables" roleURI="http://quantumxlabs.xyz/role/GoodwillAndIntangibleAssetsNetTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#BusinessCombinationTables" roleURI="http://quantumxlabs.xyz/role/BusinessCombinationTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#LoansTables" roleURI="http://quantumxlabs.xyz/role/LoansTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#FinancialInstrumentsAtFairValueTables" roleURI="http://quantumxlabs.xyz/role/FinancialInstrumentsAtFairValueTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ShareholdersEquityTables" roleURI="http://quantumxlabs.xyz/role/ShareholdersEquityTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#EarningLossPerShareTables" roleURI="http://quantumxlabs.xyz/role/EarningLossPerShareTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SegmentReportingTables" roleURI="http://quantumxlabs.xyz/role/SegmentReportingTables" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#GeneralDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/GeneralDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfDiscontinuedOperationsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfDiscontinuedOperationsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfDiscontinuedOperationsDetailsParenthetical" roleURI="http://quantumxlabs.xyz/role/ScheduleOfDiscontinuedOperationsDetailsParenthetical" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#LoanToFormerParentCompanyDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/LoanToFormerParentCompanyDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfGoodwillAndIntangibleAssetsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfGoodwillAndIntangibleAssetsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfFairValueOfAssetsAndLiabilitiesDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfFairValueOfAssetsAndLiabilitiesDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#BusinessCombinationDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/BusinessCombinationDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfCompositionOfBalanceOfGroupsLoansDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfCompositionOfBalanceOfGroupsLoansDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#LoansDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/LoansDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfFinancialInstrumentsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfFinancialInstrumentsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#CommitmentsAndContingenciesDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/CommitmentsAndContingenciesDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfOutstandingWarrantsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfOutstandingWarrantsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ShareholdersEquityDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/ShareholdersEquityDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfBasicAndDilutedNetLossPerShareDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfBasicAndDilutedNetLossPerShareDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfSegmentsRevenuesAndOperatingResultsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfSegmentsRevenuesAndOperatingResultsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#ScheduleOfReconciliationBetweenSegmentsOperatingResultsDetails" roleURI="http://quantumxlabs.xyz/role/ScheduleOfReconciliationBetweenSegmentsOperatingResultsDetails" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SegmentReportingDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/SegmentReportingDetailsNarrative" />
    <link:roleRef xlink:type="simple" xlink:href="qxl-20260630.xsd#SubsequentEventsDetailsNarrative" roleURI="http://quantumxlabs.xyz/role/SubsequentEventsDetailsNarrative" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/Cover" xlink:title="00000001 - Document - Cover" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedBalanceSheets" xlink:title="00000002 - Statement - Interim Condensed Consolidated Balance Sheets">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashCurrent" xlink:label="loc_us-gaapRestrictedCashCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapRestrictedCashCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaapAccountsReceivableNetCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapAccountsReceivableNetCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_RelatedPartiesAdvancesCurrent" xlink:label="loc_QXLRelatedPartiesAdvancesCurrent" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_QXLRelatedPartiesAdvancesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent" xlink:label="loc_us-gaapOtherAssetsCurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapOtherAssetsCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaapAssetsNoncurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="loc_us-gaapDeferredIncomeTaxAssetsNet" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapDeferredIncomeTaxAssetsNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquitySecuritiesFVNINoncurrent" xlink:label="loc_us-gaapEquitySecuritiesFVNINoncurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapEquitySecuritiesFVNINoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaapIntangibleAssetsNetExcludingGoodwill" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapIntangibleAssetsNetExcludingGoodwill" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaapGoodwill" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapGoodwill" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaapEquityMethodInvestments" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsNoncurrent" xlink:to="loc_us-gaapEquityMethodInvestments" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccountsPayableCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_GovernmentAuthoritiesLiabilitiesCurrent" xlink:label="loc_QXLGovernmentAuthoritiesLiabilitiesCurrent" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_QXLGovernmentAuthoritiesLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityCurrent" xlink:label="loc_us-gaapBusinessCombinationContingentConsiderationLiabilityCurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapBusinessCombinationContingentConsiderationLiabilityCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaapShortTermBorrowings" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapShortTermBorrowings" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaapLongTermDebtCurrent" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapLongTermDebtCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_ConvertibleDebtShortTerm" xlink:label="loc_QXLConvertibleDebtShortTerm" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_QXLConvertibleDebtShortTerm" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_RelatedPartiesDebtCurrent" xlink:label="loc_QXLRelatedPartiesDebtCurrent" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_QXLRelatedPartiesDebtCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:label="loc_us-gaapOtherLiabilitiesCurrent" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapOtherLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaapLiabilitiesNoncurrent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaapLongTermDebtNoncurrent" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesNoncurrent" xlink:to="loc_us-gaapLongTermDebtNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaapDeferredIncomeTaxLiabilitiesNet" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesNoncurrent" xlink:to="loc_us-gaapDeferredIncomeTaxLiabilitiesNet" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent" xlink:label="loc_us-gaapBusinessCombinationContingentConsiderationLiabilityNoncurrent" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesNoncurrent" xlink:to="loc_us-gaapBusinessCombinationContingentConsiderationLiabilityNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaapAdditionalPaidInCapitalCommonStock" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapitalCommonStock" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaapMinorityInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="loc_us-gaapMinorityInterest" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilitiesNoncurrent" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaapCommitmentsAndContingencies" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapCommitmentsAndContingencies" xlink:type="arc" weight="1" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedBalanceSheetsParenthetical" xlink:title="00000003 - Statement - Interim Condensed Consolidated Balance Sheets (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfOperations" xlink:title="00000004 - Statement - Interim Condensed Consolidated Statements of Operations (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues" xlink:label="loc_us-gaapRevenues" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapRevenues" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts" xlink:label="loc_us-gaapBusinessCombinationAcquisitionRelatedCosts" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapBusinessCombinationAcquisitionRelatedCosts" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaapResearchAndDevelopmentExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapResearchAndDevelopmentExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="loc_us-gaapSellingAndMarketingExpense" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapSellingAndMarketingExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaapGeneralAndAdministrativeExpense" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapGeneralAndAdministrativeExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="loc_us-gaapOtherCostAndExpenseOperating" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingIncomeLoss" xlink:to="loc_us-gaapOtherCostAndExpenseOperating" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeconsolidationGainOrLossAmount" xlink:label="loc_us-gaapDeconsolidationGainOrLossAmount" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapDeconsolidationGainOrLossAmount" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingExpense" xlink:label="loc_us-gaapOtherNonoperatingExpense" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="loc_us-gaapOtherNonoperatingExpense" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:label="loc_us-gaapIncomeLossFromContinuingOperations" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperations" xlink:to="loc_us-gaapIncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaapIncomeTaxExpenseBenefit" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapIncomeLossFromContinuingOperations" xlink:to="loc_us-gaapIncomeTaxExpenseBenefit" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeLossFromContinuingOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:label="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapNetIncomeLossAttributableToNoncontrollingInterest" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_IncomeLossFromContinuingOperationsNetOfTaxAttributableToParent" xlink:label="loc_QXLIncomeLossFromContinuingOperationsNetOfTaxAttributableToParent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapIncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLIncomeLossFromContinuingOperationsNetOfTaxAttributableToParent" xlink:to="loc_us-gaapIncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:label="loc_us-gaapIncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLIncomeLossFromContinuingOperationsNetOfTaxAttributableToParent" xlink:to="loc_us-gaapIncomeLossFromContinuingOperationsAttributableToNoncontrollingEntity" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToParent" xlink:label="loc_QXLIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToParent" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax" xlink:label="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTax" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToParent" xlink:to="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTax" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToParent" xlink:to="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:type="arc" weight="-1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfChangesInShareholdersEquity" xlink:title="00000005 - Statement - Interim Condensed Consolidated Statements of Changes in Shareholders&apos; Equity (Unaudited)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfCashFlows" xlink:title="00000006 - Statement - Interim Condensed Consolidated Statements of Cash Flows (Unaudited)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:label="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperations" xlink:label="loc_us-gaapIncomeLossFromContinuingOperations" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapProfitLoss" xlink:to="loc_us-gaapIncomeLossFromContinuingOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapIncomeLossFromContinuingOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaapShareBasedCompensation" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapShareBasedCompensation" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="loc_us-gaapDeferredIncomeTaxesAndTaxCredits" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapDeferredIncomeTaxesAndTaxCredits" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_GainLossOnAccruedInterestNet" xlink:label="loc_QXLGainLossOnAccruedInterestNet" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_QXLGainLossOnAccruedInterestNet" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaapInterestIncomeOperating" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapInterestIncomeOperating" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="loc_us-gaapAmortizationOfDebtDiscountPremium" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapAmortizationOfDebtDiscountPremium" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossOnSecuritizationOfFinancialAssets" xlink:label="loc_us-gaapGainLossOnSecuritizationOfFinancialAssets" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapGainLossOnSecuritizationOfFinancialAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaapAmortizationOfFinancingCosts" />
      <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapAmortizationOfFinancingCosts" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeconsolidationGainOrLossAmount" xlink:label="loc_us-gaapDeconsolidationGainOrLossAmount" />
      <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapDeconsolidationGainOrLossAmount" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsReceivable" />
      <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsReceivable" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets" xlink:label="loc_us-gaapIncreaseDecreaseInOtherCurrentAssets" />
      <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapIncreaseDecreaseInOtherCurrentAssets" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedPartiesCurrent" xlink:label="loc_us-gaapIncreaseDecreaseInDueFromRelatedPartiesCurrent" />
      <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapIncreaseDecreaseInDueFromRelatedPartiesCurrent" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsPayable" />
      <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_IncreaseDecreaseInOtherPayable" xlink:label="loc_QXLIncreaseDecreaseInOtherPayable" />
      <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="loc_QXLIncreaseDecreaseInOtherPayable" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivitiesContinuingOperations" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashDivestedFromDeconsolidation" xlink:label="loc_us-gaapCashDivestedFromDeconsolidation" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="loc_us-gaapCashDivestedFromDeconsolidation" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:label="loc_us-gaapCashAcquiredFromAcquisition" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="loc_us-gaapCashAcquiredFromAcquisition" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromShortTermDebt" xlink:label="loc_us-gaapProceedsFromShortTermDebt" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_us-gaapProceedsFromShortTermDebt" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfOtherShortTermDebt" xlink:label="loc_us-gaapRepaymentsOfOtherShortTermDebt" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_us-gaapRepaymentsOfOtherShortTermDebt" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_ReceiptOfShorttermBankLoan" xlink:label="loc_QXLReceiptOfShorttermBankLoan" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_QXLReceiptOfShorttermBankLoan" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_RepaymentOfShorttermBankLoans" xlink:label="loc_QXLRepaymentOfShorttermBankLoans" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_QXLRepaymentOfShorttermBankLoans" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaapRepaymentsOfLongTermDebt" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_us-gaapRepaymentsOfLongTermDebt" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_ChangeInLoanToFormerParentCompany" xlink:label="loc_QXLChangeInLoanToFormerParentCompany" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_QXLChangeInLoanToFormerParentCompany" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromOtherEquity" xlink:label="loc_us-gaapProceedsFromOtherEquity" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_us-gaapProceedsFromOtherEquity" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="loc_us-gaapProceedsFromWarrantExercises" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="loc_us-gaapProceedsFromWarrantExercises" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInDiscontinuedOperations" xlink:label="loc_us-gaapNetCashProvidedByUsedInDiscontinuedOperations" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaapCashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInDiscontinuedOperations" xlink:to="loc_us-gaapCashProvidedByUsedInOperatingActivitiesDiscontinuedOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaapCashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInDiscontinuedOperations" xlink:to="loc_us-gaapCashProvidedByUsedInInvestingActivitiesDiscontinuedOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:label="loc_us-gaapCashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInDiscontinuedOperations" xlink:to="loc_us-gaapCashProvidedByUsedInFinancingActivitiesDiscontinuedOperations" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:type="arc" weight="1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:type="arc" weight="1" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:type="arc" weight="1" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInDiscontinuedOperations" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/InterimCondensedConsolidatedStatementsOfCashFlowsParenthetical" xlink:title="00000007 - Statement - Interim Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/General" xlink:title="999008 - Disclosure - GENERAL" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SignificantAccountingPolicies" xlink:title="999009 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/DiscontinuedOperations" xlink:title="999010 - Disclosure - DISCONTINUED OPERATIONS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/LoanToFormerParentCompany" xlink:title="999011 - Disclosure - LOAN TO FORMER PARENT COMPANY" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/GoodwillAndIntangibleAssetsNet" xlink:title="999012 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/BusinessCombination" xlink:title="999013 - Disclosure - BUSINESS COMBINATION" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/Loans" xlink:title="999014 - Disclosure - LOANS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/FinancialInstrumentsAtFairValue" xlink:title="999015 - Disclosure - FINANCIAL INSTRUMENTS AT FAIR VALUE" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/CommitmentsAndContingencies" xlink:title="999016 - Disclosure - COMMITMENTS AND CONTINGENCIES" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ShareholdersEquity" xlink:title="999017 - Disclosure - SHAREHOLDERS&#8217; EQUITY" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/EarningLossPerShare" xlink:title="999018 - Disclosure - EARNING (LOSS) PER SHARE" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SegmentReporting" xlink:title="999019 - Disclosure - SEGMENT REPORTING" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SubsequentEvents" xlink:title="999020 - Disclosure - SUBSEQUENT EVENTS" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SignificantAccountingPoliciesPolicies" xlink:title="999021 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/DiscontinuedOperationsTables" xlink:title="999022 - Disclosure - DISCONTINUED OPERATIONS (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/GoodwillAndIntangibleAssetsNetTables" xlink:title="999023 - Disclosure - GOODWILL AND INTANGIBLE ASSETS, NET (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/BusinessCombinationTables" xlink:title="999024 - Disclosure - BUSINESS COMBINATION (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/LoansTables" xlink:title="999025 - Disclosure - LOANS (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/FinancialInstrumentsAtFairValueTables" xlink:title="999026 - Disclosure - FINANCIAL INSTRUMENTS AT FAIR VALUE (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ShareholdersEquityTables" xlink:title="999027 - Disclosure - SHAREHOLDERS&#8217; EQUITY (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/EarningLossPerShareTables" xlink:title="999028 - Disclosure - EARNING (LOSS) PER SHARE (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SegmentReportingTables" xlink:title="999029 - Disclosure - SEGMENT REPORTING (Tables)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/GeneralDetailsNarrative" xlink:title="999030 - Disclosure - GENERAL (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfDiscontinuedOperationsDetails" xlink:title="999031 - Disclosure - SCHEDULE OF DISCONTINUED OPERATIONS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfDiscontinuedOperationsDetailsParenthetical" xlink:title="999032 - Disclosure - SCHEDULE OF DISCONTINUED OPERATIONS (Details) (Parenthetical)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/LoanToFormerParentCompanyDetailsNarrative" xlink:title="999033 - Disclosure - LOAN TO FORMER PARENT COMPANY (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfGoodwillAndIntangibleAssetsDetails" xlink:title="999034 - Disclosure - SCHEDULE OF GOODWILL AND INTANGIBLE ASSETS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfFairValueOfAssetsAndLiabilitiesDetails" xlink:title="999035 - Disclosure - SCHEDULE OF FAIR VALUE OF ASSETS AND LIABILITIES (Details)">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:label="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="loc_us-gaapCashEquivalentsAtCarryingValue" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_us-gaapCashEquivalentsAtCarryingValue" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:label="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_NetWorkingCapitalOtherThanCashAndRestrictedDeposits" xlink:label="loc_QXLNetWorkingCapitalOtherThanCashAndRestrictedDeposits" />
      <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_QXLNetWorkingCapitalOtherThanCashAndRestrictedDeposits" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:label="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" />
      <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaapGoodwill" />
      <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_us-gaapGoodwill" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTechnologyNetOfDeferredTaxes" xlink:label="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTechnologyNetOfDeferredTaxes" />
      <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedTechnologyNetOfDeferredTaxes" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInprocessResearchAndDevelopmentNetOfDeferredTaxes" xlink:label="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInprocessResearchAndDevelopmentNetOfDeferredTaxes" />
      <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInprocessResearchAndDevelopmentNetOfDeferredTaxes" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaapMinorityInterest" />
      <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_us-gaapMinorityInterest" xlink:type="arc" weight="-1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationsNetOfDeferredTaxes" xlink:label="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationsNetOfDeferredTaxes" />
      <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:to="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationsNetOfDeferredTaxes" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:label="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEarnoutLiabilityArisingFromAcquisition" xlink:label="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEarnoutLiabilityArisingFromAcquisition" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:to="loc_QXLBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEarnoutLiabilityArisingFromAcquisition" xlink:type="arc" weight="1" />
      <link:loc xlink:type="locator" xlink:href="qxl-20260630.xsd#QXL_AcquisitionCost" xlink:label="loc_QXLAcquisitionCost" />
      <link:calculationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLAcquisitionCost" xlink:to="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets" xlink:type="arc" weight="-1" />
      <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_QXLAcquisitionCost" xlink:to="loc_us-gaapBusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities" xlink:type="arc" weight="1" />
    </link:calculationLink>
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/BusinessCombinationDetailsNarrative" xlink:title="999036 - Disclosure - BUSINESS COMBINATION (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfCompositionOfBalanceOfGroupsLoansDetails" xlink:title="999037 - Disclosure - SCHEDULE OF COMPOSITION OF BALANCE OF GROUP&#8217;S LOANS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/LoansDetailsNarrative" xlink:title="999038 - Disclosure - LOANS (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfFinancialInstrumentsDetails" xlink:title="999039 - Disclosure - SCHEDULE OF FINANCIAL INSTRUMENTS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/CommitmentsAndContingenciesDetailsNarrative" xlink:title="999040 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfOutstandingWarrantsDetails" xlink:title="999041 - Disclosure - SCHEDULE OF OUTSTANDING WARRANTS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ShareholdersEquityDetailsNarrative" xlink:title="999042 - Disclosure - SHAREHOLDERS&#8217; EQUITY (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfBasicAndDilutedNetLossPerShareDetails" xlink:title="999043 - Disclosure - SCHEDULE OF BASIC AND DILUTED NET LOSS PER SHARE (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfSegmentsRevenuesAndOperatingResultsDetails" xlink:title="999044 - Disclosure - SCHEDULE OF SEGMENTS REVENUES AND OPERATING RESULTS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/ScheduleOfReconciliationBetweenSegmentsOperatingResultsDetails" xlink:title="999045 - Disclosure - SCHEDULE OF RECONCILIATION BETWEEN SEGMENTS OPERATING RESULTS (Details)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SegmentReportingDetailsNarrative" xlink:title="999046 - Disclosure - SEGMENT REPORTING (Details Narrative)" />
    <link:calculationLink xlink:type="extended" xlink:role="http://quantumxlabs.xyz/role/SubsequentEventsDetailsNarrative" xlink:title="999047 - Disclosure - SUBSEQUENT EVENTS (Details Narrative)" />
</link:linkbase>
