Ring size chart
| UK | US | EU | ⌀ Inside Diameter |
|---|---|---|---|
| F | 3 | 44 | ⌀ 14.0 mm |
| G | 3.5 | 45 | ⌀ 14.5 mm |
| H | 4 | 46.5 | ⌀ 15.0 mm |
| I | 4.5 | 48 | ⌀ 15.3 mm |
| J | 5 | 49.5 | ⌀ 15.6 mm |
| K | 5.5 | 50.5 | ⌀ 16.2 mm |
| L | 6 | 52 | ⌀ 16.6 mm |
| M | 6.5 | 53 | ⌀ 16.9 mm |
| N | 7 | 54.5 | ⌀ 17.2 mm |
| O | 7.5 | 55.5 | ⌀ 17.8 mm |
| P | 8 | 57 | ⌀ 18.1 mm |
| Q | 8.5 | 58 | ⌀ 18.5 mm |
| R | 9 | 59.5 | ⌀ 19.1 mm |
| S | 9.5 | 61 | ⌀ 19.4 mm |
| T | 10 | 62 | ⌀ 19.7 mm |
| U | 10.5 | 63.5 | ⌀ 20.4 mm |
| V | 11 | 64.5 | ⌀ 20.7 mm |
| W | 11.5 | 66 | ⌀ 21.0 mm |
| X | 12 | 67 | ⌀ 21.6 mm |
| Y | 12.5 | 68.5 | ⌀ 22.0 mm |
| Z | 13 | 69.5 | ⌀ 23.3 mm |