RING SIZE GUIDE
| Diameter (mm) | UK | EU | US |
| 13.3 | D | 42 | 1.75 |
| 13.5 | D 1/2 | 42.5 | 2 |
| 13.7 | E | 43.5 | 2.25 |
| 13.9 | E 1/2 | 44 | 2.5 |
| 14.1 | F | 44.5 | 2.75 |
| 14.3 | F 1/2 | 45 | 3 |
| 14.5 | G | 45.5 | 3.25 |
| 14.7 | G 1/2 | 46 | 3.5 |
| 14.9 | H | 47 | 3.75 |
| 15.1 | H 1/2 | 47.5 | 4 |
| 15.3 | I | 48 | 4.25 |
| 15.5 | I 1/2 | 48.5 | 4.5 |
| 15.7 | J | 49.5 | 4.75 |
| 15.9 | J 1/2 | 50 | 5 |
| 16.1 | K | 50.5 | 5.25 |
| 16.3 | K 1/2 | 51 | 5.5 |
| 16.5 | L | 52 | 5.75 |
| 16.7 | L 1/2 | 52.5 | 6 |
| 16.9 | M | 53 | 6.25 |
| 17.1 | M 1/2 | 54 | 6.5 |
| 17.3 | N | 54.5 | 6.75 |
| 17.5 | N 1/2 | 55 | 7 |
| 17.7 | O | 55.75 | 7.25 |
| 17.9 | O 1/2 | 56.25 | 7.5 |
| 18.1 | P | 57 | 7.75 |
| 18.3 | P 1/2 | 57.25 | 8 |
| 18.5 | Q | 58 | 8.25 |
| 18.7 | Q 1/2 | 58.5 | 8.5 |
| 18.9 | R | 59.5 | 8.75 |
| 19.1 | R 1/2 | 60 | 9 |
| 19.3 | S | 60.5 | 9.25 |
| 19.5 | S 1/2 | 61.25 | 9.5 |
| 19.7 | T | 62 | 9.75 |
| 19.9 | T 1/2 | 62.5 | 10 |
| 20.1 | U | 63 | 10.25 |
| 20.3 | U 1/2 | 64 | 10.5 |
| 20.5 | V | 64.25 | 10.75 |
| 20.7 | V 1/2 | 65 | 11 |
| 20.9 | W | 65.5 | 11.25 |
