Ring Size Guide
At Prosebud Jewelry, we understand that our customers come from around the world—and so do ring sizing standards. This international size chart is designed to help you find your US ring size equivalent based on your local sizing system.
Note: All sizes and measurements are approximate. Slight variations may occur due to manufacturing tolerances.
| US Size | Circumference (mm) | Diameter (mm) | Europe & Australia | Asia | Switzerland |
|---|---|---|---|---|---|
| 3 | 44.2 | 14.1 | F | 4 | 4 |
| 44.8 | 14.3 | F½ | 5 | 5½ | |
| 3¾ | 45.5 | 14.5 | G | ||
| 46.1 | 14.7 | G½ | 6 | 6½ | |
| 4 | 46.8 | 14.9 | H | 7 | |
| 47.4 | 15.1 | H½ | 7½ | ||
| 4½ | 48.0 | 15.3 | I | 8 | |
| 48.7 | 15.5 | 9 | 9 | ||
| 5 | 49.3 | 15.7 | J | ||
| 50.0 | 15.9 | K | 10 | 10 | |
| 5½ | 50.6 | 16.1 | K½ | ||
| 51.2 | 16.3 | L | 11 | 11½ | |
| 6 | 51.9 | 16.5 | L½ | 12½ | |
| 52.5 | 16.7 | M | 12 | ||
| 6½ | 53.1 | 16.9 | M½ | 13 | 14 |
| 53.8 | 17.1 | N | |||
| 7 | 54.4 | 17.3 | N½ | 14 | 15½ |
| 55.1 | 17.5 | O | |||
| 7½ | 55.7 | 17.7 | O½ | 15 | 16½ |
| 56.3 | 17.9 | P | |||
| 8 | 57.0 | 18.1 | P½ | 16 | 17½ |
| 57.6 | 18.3 | Q | |||
| 8½ | 58.3 | 18.5 | Q½ | 17 | |
| 58.9 | 18.8 | 19 | |||
| 9 | 59.5 | 19.0 | R½ | 18 | |
| 60.2 | 19.2 | S | 20½ | ||
| 9½ | 60.8 | 19.4 | S½ | 19 | |
| 61.4 | 19.6 | T | 21½ | ||
| 10 | 62.1 | 19.8 | T½ | 20 | |
| 62.7 | 20.0 | U | 21 | ||
| 10½ | 63.4 | 20.2 | U½ | 22 | 22½ |
| 64.0 | 20.4 | V | |||
| 11 | 64.6 | 20.6 | V½ | 23 | |
| 65.3 | 20.8 | W | 25 | ||
| 11½ | 65.9 | 21.0 | W½ | 24 | |
| 66.6 | 21.2 | X | |||
| 12 | 67.2 | 21.4 | X½ | 25 | 27½ |
| 67.8 | 21.6 | Y | |||
| 12½ | 68.5 | 21.8 | Z | 26 | 28½ |
| 69.1 | 22.0 | Z½ | |||
| 13 | 69.7 | 22.2 | 27 | ||
| 70.4 | 22.4 | Z+1 | |||
| 13½ | 71.0 | 22.6 |