Size guide
Measure once, choose with confidence. Use the tables and the on-screen guide below, or visit the store and we will measure for you.
Choose a size
Calibrate your screen
Set browser zoom to 100%. Hold a real credit card against the rectangle below and adjust the slider until the sizes match. The circles use the same calibration.
Credit card · 85.6 × 54 mm
Screen scale100%
How to measure
Measure the inner diameter of a ring that fits you, in millimetres. Or measure the circumference of your finger and divide by 3.14.
| EU | US | UK | Inner mm |
|---|---|---|---|
| 44 | 3 | F | 14 |
| 45 | 3.5 | G | 14.3 |
| 46 | 4 | H | 14.6 |
| 47 | 4.5 | I | 15 |
| 48 | 5 | J | 15.3 |
| 49 | 5 | K | 15.6 |
| 50 | 5.5 | L | 15.9 |
| 51 | 6 | L | 16.2 |
| 52 | 6 | M | 16.6 |
| 53 | 6.5 | N | 16.9 |
| 54 | 7 | N | 17.2 |
| 55 | 7.5 | O | 17.5 |
| 56 | 7.5 | P | 17.8 |
| 57 | 8 | P | 18.1 |
| 58 | 8.5 | Q | 18.5 |
| 59 | 9 | R | 18.8 |
| 60 | 9 | R | 19.1 |
| 61 | 9.5 | S | 19.4 |
| 62 | 10 | T | 19.7 |
| 63 | 10.5 | T | 20.1 |
| 64 | 11 | U | 20.4 |
| 65 | 11 | V | 20.7 |
| 66 | 11.5 | V | 21 |
| 67 | 12 | W | 21.3 |
| 68 | 12.5 | X | 21.6 |
| 69 | 13 | Y | 22 |
| 70 | 13 | Z | 22.3 |
EU size is the inner circumference in millimetres. US and UK sizes are the nearest equivalent and can vary slightly by maker.