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Find Out Ring Size Equivalents Globally

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US • CA UK • AU • IE • NZ JP • IN • CN • SA ES • IT • NL • CH Inside-Diameter & Circumference (Mm)
3 F 4 4.25 14.05 & 44.14
3.25 F.5 - 4.75 14.24 & 44.74
3.50 G 5 5.5 14.45 & 45.40
3.75 G.5 6 6 14.65 & 46.02
4 H 7 6.75 14.88 & 46.80
4.25 H.5 - 7.5 15.09 & 47.40
4.5 I 8 8 15.29 & 48.00
4.75 J - 8.75 15.49 & 48.70
5 J 1/2 9 9.25 15.70 & 49.30