Ring Size Conversion Chart
PRINTABLERing Size Conversion Table
| US/Canada | UK/Australia | EU | Diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 3 | F | 44 | 14.1 | 44.2 |
| 3.5 | G | 45 | 14.5 | 45.5 |
| 4 | H | 46 | 14.9 | 46.8 |
| 4.5 | I | 47 | 15.3 | 48.0 |
| 5 | J | 49 | 15.7 | 49.3 |
| 5.5 | K | 50 | 16.1 | 50.6 |
| 6 | L | 51 | 16.5 | 51.9 |
| 6.5 | M | 52 | 16.9 | 53.1 |
| 7 | N | 54 | 17.3 | 54.4 |
| 7.5 | O | 55 | 17.7 | 55.7 |
| 8 | P | 56 | 18.1 | 57.0 |
| 8.5 | Q | 58 | 18.5 | 58.3 |
| 9 | R | 59 | 19.0 | 59.5 |
| 9.5 | S | 60 | 19.4 | 60.8 |
| 10 | T | 61 | 19.8 | 62.1 |
| 10.5 | U | 62 | 20.2 | 63.4 |
| 11 | V | 64 | 20.6 | 64.6 |
| 11.5 | W | 65 | 21.0 | 65.9 |
| 12 | X | 66 | 21.4 | 67.2 |
How to Measure Ring Size
To measure your ring size at home, wrap a string or paper strip around your finger, mark where it overlaps, and measure the length in millimeters. This is your circumference. Compare to the table above. For best results, measure when your hands are warm and at the end of the day when fingers are largest. For a printable ring sizer, use the print button below.