Size Guide
- Download ring size verification sheet [Download]
- Purchase plastic ring sizer [Click Here]
International Ring Size Conversion
| Inner Diameter (mm) | United States | Europe | Japan |
| 14.1 | 3 | F | 4 |
| 14.3 | 3.25 | F 1/2 | 5 |
| 14.5 | 3.5 | G | |
| 14.7 | 3.75 | G 1/2 | 6 |
| 14.9 | 4 | H | 7 |
| 15.1 | 4.25 | H 1/2 | |
| 15.3 | 4.5 | I | 8 |
| 15.5 | 4.75 | J | |
| 15.7 | 5 | J 1/2 | 9 |
| 15.9 | 5.25 | K | |
| 16.1 | 5.5 | K 1/2 | 10 |
| 16.3 | 5.75 | L | |
| 16.5 | 6 | L 1/2 | 11 |
| 16.7 | 6.25 | M | 12 |
| 16.9 | 6.5 | M 1/2 | 13 |
| 17.1 | 6.75 | N | |
| 17.3 | 7 | M 1/2 | 14 |
| 17.5 | 7.25 | O | |
| 17.7 | 7.5 | O 1/2 | 15 |
| 17.9 | 7.75 | P | |
| 18.1 | 8 | P 1/2 | 16 |
| 18.3 | 8.25 | Q | |
| 18.5 | 8.5 | Q 1/2 | 17 |
| 18.8 | 8.75 | R | |
| 19.0 | 9 | R 1/2 | 18 |
| 19.2 | 9.25 | S | |
| 19.4 | 9.5 | S 1/2 | 19 |
| 19.6 | 9.75 | T | |
| 19.8 | 10 | T 1/2 | 20 |
| 20.0 | 10.25 | U | 21 |
| 20.2 | 10.5 | U 1/2 | 22 |
| 20.4 | 10.75 | V | |
| 20.6 | 11 | V 1/2 | 23 |
| 20.8 | 11.25 | W | |
| 21.0 | 11.5 | W 1/2 | 24 |
| 21.2 | 11.75 | X | |
| 21.4 | 12 | X 1/2 |
25 |