Ring Size Chart
| US Size | AU / UK Size | EU Size | Circumference (mm) | Diameter (mm) |
|---|---|---|---|---|
| 4.25 | H | 46.5 | 48.0 | 15.2 |
| 4.5 | I | 47.5 | 48.7 | 15.5 |
| 5 | J | 49.5 | 50.0 | 15.9 |
| 5.5 | K | 50.5 | 51.2 | 16.3 |
| 6 | L | 51.5 | 52.0 | 16.5 |
| 6.5 | M | 52.5 | 53.1 | 16.9 |
| 7 | N | 54.5 | 54.0 | 17.2 |
| 7.5 | O | 55.5 | 55.3 | 17.7 |
| 8 | P | 57.5 | 56.0 | 17.8 |
| 8.5 | Q | 58.5 | 57.3 | 18.2 |
| 9 | R | 60.5 | 58.0 | 18.5 |
| 9.5 | S | 61.5 | 59.3 | 18.9 |
| 10 | T | 62.5 | 60.0 | 19.1 |
| 10.5 | U | 63.5 | 61.3 | 19.5 |
| 11 | V | 65.5 | 62.0 | 19.8 |
| 11.5 | W | 66.5 | 63.3 | 20.2 |
| 12 | X | 68.5 | 64.0 | 20.4 |