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    <dei:EntityRegistrantName contextRef="rc" id="ixv-335">Metals Royalty Co Inc.</dei:EntityRegistrantName>
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    <ffd:OfferingNote contextRef="offrl_1" id="ixv-379">(a) Represents the reasale of common shares issued to the selling shareholders pursuant to certain subscription agreements between the Company and the selling shareholders named therein, shares issued as partial consideration for the sale of TMCR USA Operations, Inc. pursuant to the royalty purchase agreement dated as of May 6, 2026, shares issued to certain vendors and shares issued in satisfaction of the commitment fee due to YA II PN, Ltd. pursuant to the Standby Equity Purchase Agreement between the Company and YA II PN, Ltd. dated as of July 18, 2025.
(b) Estimated solely for purposes of calculating the registration fee pursuant to Rules 457(c) and 457(h) under the Securities Act, based on the average of the high and low prices of the registrant's common stock as reported on Nasdaq on June 17, 2026.
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