 |
|
Ring Size |
Circumference |
Diameter
|
| USA | (inch) | (mm) | (mm) |
| 3 | 1.74 | 44.2 | 14.10 |
| 3.5 | 1.79 | 45.5 | 14.48 |
| 4 | 1.84 | 46.8 | 14.88 |
| 4.5 | 1.89 | 48 | 15.30 |
| 5 | 1.94 | 49 | 15.70 |
| 5.5 | 1.99 | 51 | 16.10 |
| 6 | 2.04 | 52 | 16.51 |
| 6.5 | 2.09 | 53 | 16.92 |
| 7 | 2.14 | 55 | 17.35 |
| 7.5 | 2.19 | 56 | 17.75 |
| 8 | 2.24 | 57 | 18.19 |
| 8.5 | 2.29 | 58 | 18.53 |
| 9 | 2.34 | 59 | 18.89 |
| 9.5 | 2.39 | 61 | 19.41 |
| 10 | 2.44 | 62 | 19.84 |
| 10.5 | 2.49 | 63 | 20.20 |
| 11 | 2.56 | 65 | 20.68 |
| 11.5 | 2.59 | 66 | 21.08 |
| 12 | 2.65 | 68 | 21.49 |
| 12.5 | 2.69 | 69 | 21.89 |
| 13 | 2.74 | 70 | 22.33 |
| 13.5 | 2.79 | 71 | 22.60 |
| 14 | 2.85 | 72 | 22.69 |
