RING SIZE GUIDE
| UK | US | DIAMETER(mm) |
| J | 5 | 15.6 |
| K | 5 1/2 | 16 |
| L | 6 | 16.4 (S) |
| M | 6 1/2 | 16.8 |
| N | 7 | 17.2 (M) |
| O | 7 1/2 | 17.6 |
| P | 8 | 18 (L) |
| Q | 8 1/2 | 18.4 |
| R | 8 3/4 | 18.75 |
| S | 9 1/4 | 19.15 |
| T | 9 3/4 | 19.56 |
| UK | US | DIAMETER(mm) |
| J | 5 | 15.6 |
| K | 5 1/2 | 16 |
| L | 6 | 16.4 (S) |
| M | 6 1/2 | 16.8 |
| N | 7 | 17.2 (M) |
| O | 7 1/2 | 17.6 |
| P | 8 | 18 (L) |
| Q | 8 1/2 | 18.4 |
| R | 8 3/4 | 18.75 |
| S | 9 1/4 | 19.15 |
| T | 9 3/4 | 19.56 |