| Diameter (MM) |
US/Canada Ring Size |
Europe Ring Size |
| 14.1 | 3 | 44 |
| 14.5 | 3.5 | 45 |
| 14.9 | 4 | 46 |
| 15.3 | 4.5 | 47 |
| 15.7 | 5 | 49 |
| 16.1 | 5.5 | 50 |
| 16.5 | 6 | 51 |
| 16.9 | 6.5 | 52 |
| 17.3 | 7 | 54 |
| 17.7 | 7.5 | 55 |
| 18.1 | 8 | 57 |
| 18.5 | 8.5 | 58 |
| 19 | 9 | 59 |
| 19.4 | 9.5 | 61 |
| 19.8 | 10 | 62 |
| 20.2 | 10.5 | 63 |
| 20.6 | 11 | 65 |
| 21 | 11.5 | 66 |
| 21.4 | 12 | 67 |
| 21.8 | 12.5 | 69 |
| 22.2 | 13 | 70 |
| 22.6 | 13.5 | 71 |
| 23 | 14 | 73 |