US: 10.5 to Europe Size 59.5
Cross-market men’s wedding band and signet ring size conversion mapping 10.5 specifications into 59.5.

Analyzing Ring Size Equivalence Across Markets
US: 10.5: Features an inner finger circumference of 63.4 (2.5 ), and an inner diameter of 20.2 (0.795 ).
Europe Size 59.5: Features an inner finger circumference of 59.5 (2.34 ), and an inner diameter of 18.9 (0.744 ).
Other Conversions to Europe Size 59.5
US: 7 → eu-59-57 to eu-59-5
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US: 7.5 → eu-59-57.5 to eu-59-5
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US: 8 → eu-59-58 to eu-59-5
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US: 8.5 → eu-59-58.5 to eu-59-5
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US: 9 → eu-59-59 to eu-59-5
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US: 9.5 → eu-59-59.5 to eu-59-5
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US: 10 → eu-59-510 to eu-59-5
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US: 10.5 → eu-59-510.5 to eu-59-5
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US: 11 → eu-59-511 to eu-59-5
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US: 11.5 → eu-59-511.5 to eu-59-5
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US: 12 → eu-59-512 to eu-59-5
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US: 12.5 → eu-59-512.5 to eu-59-5
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