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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 |