Measure the inside circumference of your finger in millimetres (see our guide to measuring your ring size at home) and match it below.
| US size | Circumference (mm) | Diameter (mm) |
|---|---|---|
| 5 | 49.3 | 15.7 |
| 6 | 51.9 | 16.5 |
| 7 | 54.4 | 17.3 |
| 8 | 57.0 | 18.1 |
| 9 | 59.5 | 18.9 |
| 10 | 62.1 | 19.8 |
| 11 | 64.6 | 20.6 |
| 12 | 67.2 | 21.4 |
Between two sizes? Choose the larger one, or send us your measurement and we will confirm it for you.