Ring Size Chart
| Diameter (mm) | US | UK | EU |
| 14 | 3 | F | 44 |
| 14.6 | 3.75 | H | 46 |
| 15.3 | 4.5 | H1/2 - I1/2 | 48 |
| 15.6 | 4.75 | J | 49 |
| 16 | 5 | J-K | 50 |
| 16.2 | 5.5 | K-L | 51 |
| 16.5 | 6 | L - L1/2 | 52 |
| 16.9 | 6.5 | M | 53 |
| 17.2 | 7 | N | 54 |
| 17.5 | 7.25 | O | 55 |
| 17.8 | 7.5 | O - P | 56 |
| 18.1 | 8 | P | 57 |
| 18.5 | 8.5 | P1/2 - Q1/2 | 58 |
| 18.8 | 8.75 | R | 59 |
| 19 | 9 | R1/2 - S | 60 |
| 19.8 | 10 | T1/2 | 62 |
| 20.4 | 10.5 | V | 64 |
| Circumference (mm) | US | UK | EU |
| 44 | 3 | F | 44 |
| 46 | 3.75 | H | 46 |
| 48 | 4.5 | H1/2 - I1/2 | 48 |
| 50 | 5 | J - K | 50 |
| 51 | 5.5 | K-L | 51 |
| 52 | 6 | I - I1/2 | 52 |
| 53 | 6.5 | M | 53 |
| 54 | 7 | N | 54 |
| 55 | 7.25 | O | 55 |
| 56 | 7.5 | O - P | 56 |
| 57 | 8 | P | 57 |
| 58 | 8.5 | P1/2 - Q1/2 | 58 |
| 59 | 8.75 | R | 59 |
| 60 | 9 | R1/2 - S | 60 |
| 62 | 10 | T1/2 | 62 |
| 64 | 10.5 | V | 64 |