Ring Size Guide
International ring size conversions are approximate and have been matched to the nearest equivalent based on UK and US measurements. If you are between sizes, we recommend selecting the larger size. For the most accurate fit, measure a ring that already fits you well or have your finger professionally sized.
| UK | US | Japan | EU / Circumference (mm) |
| D | 2 | 2 | 41 |
| E | 2 ½ | 3 | 43 |
| F | 3 | 4 | 44 |
| F ½ | 3 ¼ | 4 ½ | 45 |
| G ½ | 3 ¾ | 6 | 46 |
| H | 4 | 7 | 47 |
| I | 4 ½ | 8 | 48 |
| I ½ | 4 ¾ | 9 | 49 |
| J ½ | 5 ¼ | 10 | 50 |
| K | 5 ½ | 11 | 51 |
| L | 6 | 12 | 52 |
| M | 6 ½ | 13 | 53 |
| M ½ | 6 ¾ | 14 | 54 |
| N ½ | 7 ¼ | 15 | 55 |
| O | 7 ½ | 16 | 56 |
| P | 8 | 17 | 57 |
| P ½ | 8 ¼ | 18 | 58 |
| Q ½ | 8 ¾ | 19 | 59 |
| R | 9 | 20 | 60 |
| S | 9 ½ | 21 | 61 |
| S ½ | 9 ¾ | 22 | 62 |
| T ½ | 10 ¼ | 23 | 63 |
| U | 10 ½ | 24 | 64 |
| V | 11 | 25 | 65 |
| V ½ | 11 ¼ | 26 | 66 |
| W ½ | 11 ¾ | 27 | 67 |
| X | 12 | 28 | 68 |
| Y | 12 ½ | 29 | 69 |
| Z | 13 | 30 | 70 |
| Z ½ | 13 ¼ | 31 | 71 |