RING SIZING CHART
| Inside Diameter mm | Inside Circumference mm | US Ring Size | British & Australian |
| 14.9 | 46.7 | 4 | H |
| 15.3 | 48 | 4 ½ | H ½ |
| 15.7 | 49.3 | 5 | J ½ |
| 16.1 | 50.6 | 5 ½ | K ½ |
| 16.5 | 51.9 | 6 | L ½ |
| 16.9 | 53.2 | 6 ½ | M ½ |
| 17.3 | 54.5 | 7 | N ½ |
| 17.7 | 55.8 | 7 ½ | 0 ½ |
| 18.1 | 57.1 | 8 | P ½ |
| 18.5 | 58.4 | 8 ½ | Q ½ |
| 18.9 | 59.7 | 9 | R ½ |
| 19.3 | 61 | 9 ½ | S ½ |
| 19.7 | 62.3 | 10 | T ½ |
| 20.1 | 63.6 | 10 ½ | U ½ |
| 20.5 | 64.9 | 11 | V ½ |
| 20.9 | 66.2 | 11 ½ | W ½ |
| 21.3 | 67.5 | 12 | X ½ |
| 21.7 | 68.8 | 12 ½ | Y ½ |