Ring Jewellery Size Guide
| China Size | UK/AUS Size | US Size | EU Size | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|---|
| 1 | D | 1 | 39 | 12.4 | 39.0 |
| 2 | D½ | 2 | 40 | 12.8 | 40.2 |
| 3 | E | 3 | 42 | 13.2 | 41.5 |
| 4 | F | 4 | 43 | 13.6 | 42.7 |
| 5 | G | 5 | 44 | 14.0 | 44.0 |
| 6 | H | 6 | 45 | 14.4 | 45.2 |
| 7 | H½ | 7 | 46 | 14.8 | 46.5 |
| 8 | I½ | 8 | 48 | 15.2 | 47.7 |
| 9 | J½ | 9 | 49 | 15.6 | 49.0 |
| 10 | K | 10 | 50 | 15.9 | 49.9 |
| 11 | K½ | 11 | 51 | 16.2 | 50.9 |
| 12 | L | 12 | 52 | 16.5 | 51.8 |