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International Ring Size Conversion Chart
| US Size | Band Circumference (mm) | Diameter (mm) | UK Size | EU Size | JP Size | Germany | France | Switzerland |
|---|---|---|---|---|---|---|---|---|
| 2 | 41.9 | 13.3 | E | 42 | 4 | 44 | 42 | 44 |
| 3 | 44.2 | 14.1 | F | 44 | 6 | 46 | 44 | 46 |
| 4 | 46.8 | 14.9 | G | 46 | 8 | 48 | 46 | 48 |
| 5 | 49.3 | 15.7 | H | 49 | 10 | 50 | 49 | 50 |
| 6 | 51.9 | 16.5 | J | 51 | 12 | 52 | 51 | 52 |
| 7 | 54.4 | 17.3 | K | 54 | 14 | 54 | 54 | 54 |
| 8 | 57.0 | 18.1 | L | 57 | 16 | 56 | 57 | 56 |
| 9 | 59.5 | 18.9 | M | 59 | 18 | 58 | 59 | 58 |
| 10 | 62.1 | 19.7 | N | 62 | 20 | 60 | 62 | 60 |
| 11 | 64.6 | 20.5 | P | 64 | 22 | 62 | 64 | 62 |
| 12 | 67.2 | 21.3 | Q | 67 | 24 | 64 | 67 | 64 |
| 13 | 69.7 | 22.1 | R | 69 | 26 | 66 | 69 | 66 |
| 14 | 72.3 | 22.9 | S | 72 | 28 | 68 | 72 | 68 |
| 15 | 74.8 | 23.7 | T | 74 | 30 | 70 | 74 | 70 |
| 16 | 77.4 | 24.5 | U | 77 | 32 | 72 | 77 | 72 |
