Ring Size Calculator
Measure your finger circumference in mm and find your corresponding ring size.
International Ring Size Chart
| US Size | UK Size | EU Size | Japan Size | China Size | India Size | Circumference (mm) | Diameter (mm) |
|---|---|---|---|---|---|---|---|
| 3 | F | 44 | 4 | 7 | 4 | 44.2 | 14.1 |
| 3.5 | G | 45 | 5 | 8 | 5 | 45.5 | 14.5 |
| 4 | H | 46-47 | 6 | 9 | 6 | 46.8 | 14.9 |
| 4.5 | I | 47 | 7 | 10 | 7 | 48.0 | 15.3 |
| 5 | J | 48 | 9 | 11 | 8 | 49.3 | 15.7 |
| 5.5 | K | 49 | 10 | 12 | 9 | 50.6 | 16.1 |
| 6 | L | 50-51 | 12 | 13 | 10 | 51.8 | 16.5 |
| 6.5 | M | 51 | 13 | 14 | 11 | 53.1 | 16.9 |
| 7 | N | 52 | 14 | 15 | 12 | 54.4 | 17.3 |
| 7.5 | O | 53 | 15 | 16 | 13 | 55.7 | 17.7 |
| 8 | P | 54 | 16 | 17 | 14 | 56.9 | 18.1 |
| 8.5 | Q | 55 | 17 | 18 | 15 | 58.2 | 18.5 |
| 9 | R | 56-57 | 18 | 19 | 16 | 59.5 | 18.9 |
| 9.5 | S | 57 | 19 | 20 | 17 | 60.8 | 19.3 |
| 10 | T | 58 | 20 | 21 | 18 | 62.1 | 19.8 |
| 10.5 | U | 59 | 21 | 22 | 19 | 63.4 | 20.2 |
| 11 | V | 60 | 22 | 23 | 20 | 64.6 | 20.6 |
| 11.5 | W | 61 | 23 | 24 | 21 | 65.9 | 21.0 |
| 12 | X | 62-63 | 24 | 25 | 22 | 67.2 | 21.4 |
| 12.5 | Y | 63 | 25 | 26 | 23 | 68.5 | 21.8 |
| 13 | Z | 64 | 26 | 27 | 24 | 69.7 | 22.2 |
Chart source: Various online sources. Sizes are approximate.
