US: 3.5 to Europe Size 49.5
Cross-market women’s rings, stacking bands, and statement jewelry conversion mapping 3.5 specifications into 49.5.

Analyzing Ring Size Equivalence Across Markets
US: 3.5: Features an inner diameter of 14.5 (0.571 ), inner circumference of 45.5 (1.79 ), and standard numerical or letter ring scales optimized for women’s sizing curves.
Europe Size 49.5: Features an inner diameter of 15.7 (0.618 ), inner circumference of 49.3 (1.94 ).
Other Conversions to Europe Size 49.5
US: 3 → eu-49-53 to eu-49-5
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US: 3.5 → eu-49-53.5 to eu-49-5
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US: 4 → eu-49-54 to eu-49-5
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US: 4.5 → eu-49-54.5 to eu-49-5
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US: 5 → eu-49-55 to eu-49-5
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US: 5.5 → eu-49-55.5 to eu-49-5
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US: 6 → eu-49-56 to eu-49-5
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US: 6.5 → eu-49-56.5 to eu-49-5
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US: 7 → eu-49-57 to eu-49-5
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US: 7.5 → eu-49-57.5 to eu-49-5
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US: 8 → eu-49-58 to eu-49-5
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US: 8.5 → eu-49-58.5 to eu-49-5
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