Ring Size Chart
| USA | EU | Inside Circumference (mm) | Inside Circumference (inch) | Inside Diameter (mm) | Inside Diameter (inch) |
| 5 | 48.5 | 49.3 | 1.94 | 15.7 | 0.61 |
| 6 | 51 | 51.9 | 2.04 | 16.5 | 0.65 |
| 7 | 55 | 54.4 | 2.14 | 17.3 | 0.68 |
| 8 | 57 | 57 | 2.24 | 18.1 | 0.71 |
| 9 | 59 | 59.5 | 2.34 | 18.9 | 0.75 |
| 10 | 61 | 62.1 | 2.44 | 19.8 | 0.78 |
| 11 | 64 | 64.6 | 2.54 | 20.1 | 0.81 |
| 12 | 67 | 67.2 | 2.65 | 21.4 | 0.84 |
| 13 | 70 | 69.7 | 2.75 | 22.1 | 0.87 |
| 14 | 73 | 72.2 | 2.85 | 22.8 | 0.9 |
| 15 | 76 | 74.8 | 2.95 | 23.6 | 0.93 |
