1. Wrap string or paper around the base of your finger.
2. Mark the point where the ends meet with a pen.
3. Measure the string or paper with a ruler.
4. Pick the closest measurement on the ring size chart to find your size.
| Inside | Circumference | Sizes | Sizes | Sizes | Sizes | Sizes | Sizes |
|---|---|---|---|---|---|---|---|
| MM | Inches | British & Australian | US & Canada | French & Russian | German | Japanese | Swiss |
| 41.50 | 1.63 | D | 2 | 41 1/2 | 13 1/2 | 2 | 1 1/2 |
| 44.14 | 1.74 | F | 3 | 44 | 14/4 | 4 | 4 |
| 46.68 | 1.84 | H 1/2 | 4 | - | 15 | 7 | - |
| 49.32 | 1.94 | J 1/2 | 5 | - | 15 3/4 | 9 | - |
| 51.87 | 2.04 | M | 6 | 52 3/4 | 16 1/2 | 12 | 12 3/4 |
| 54.51 | 2.15 | O | 7 | 55 1/4 | 17 1/4 | 14 | 15 1/4 |
| 57.15 | 2.25 | Q | 8 | 57 3/4 | 18 | 16 | 17 3/4 |
| 59.34 | 2.35 | R 3/4 | 9 | - | 19 | 18 | - |
| 62.33 | 2.45 | T 1/2 | 10 | - | 20 | 20 | - |
| 64.97 | 2.56 | V 1/2 | 11 | - | 20 3/4 | 23 | - |
| 67.51 | 2.66 | Y | 12 | 67 1/2 | 21 1/4 | 25 | 27 1/2 |
| 70.15 | 2.76 | Z+1 | 13 | - | 22 | 27 | - |