Rings Size Chart
Rings Size Guide
| US Size | UK Size | EU Size | Inside diameter (mm) | Inside diameter (inches) | Inside circumference (mm) | Inside circumference (inches) |
| US 3 | UK F | EU 44 | 14.1 | 0.6 | 44.2 | 1.7 |
| US 4 | UK H | EU 47 | 14.9 | 0.6 | 46.8 | 1.8 |
| US 5 | UK J | EU 49 | 15.5 | 0.6 | 48.7 | 1.9 |
| US 6 | UK L | EU 51 | 16.3 | 0.6 | 51.2 | 2.0 |
| US 7 | UK N | EU 54 | 17.1 | 0.7 | 53.8 | 2.1 |
| US 8 | UK P | EU 56 | 17.9 | 0.7 | 56.3 | 2.2 |
| US 9 | UK R | EU 59 | 18.8 | 0.7 | 58.9 | 2.3 |
| US 10 | UK T | EU 61 | 19.6 | 0.8 | 61.4 | 2.4 |
| US 11 | UK V | EU 64 | 20.4 | 0.8 | 64.0 | 2.5 |
| US 12 | UK X | EU 67 | 21.2 | 0.8 | 66.6 | 2.6 |
| US 13 | UK Z | EU 69 | 21.8 | 0.9 | 68.5 | 2.7 |
