International Ring Size Conversion Chart
International Ring Size Conversion Chart
Compare US, UK, Australia, and Canada ring sizes with diameter and circumference measurements
| US Size | UK Size | AU Size | CA Size | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|---|
| 4 | H | H | 4 | 14.9 | 46.8 |
| 5 | J | J | 5 | 15.7 | 49.3 |
| 6 | L | L | 6 | 16.5 | 51.9 |
| 7 | N | N | 7 | 17.3 | 54.4 |
| 8 | P | P | 8 | 18.1 | 57.0 |
| 9 | R | R | 9 | 19.0 | 59.5 |
| 10 | T | T | 10 | 19.8 | 62.1 |