Measure a Ring You Already Have:
Use a ruler to measure the inner diameter of a ring that fits comfortably. Match it to the corresponding ring size in the chart below.Measure Your Finger:
- Use a strip of paper, string, or a soft measuring tape to wrap around the base of your finger.
- Mark where the ends meet, then measure the length with a ruler in millimeters.
- Match this measurement to the corresponding circumference in the chart.
| Ring Size (EU) | Diameter (mm) | Circumference (mm) | UK Size | US Size |
|---|---|---|---|---|
| 44 | 14.0 | 44 | F | 3 |
| 45 | 14.3 | 45 | G | 3.5 |
| 46 | 14.6 | 46 | H | 4 |
| 47 | 15.0 | 47 | I | 4.5 |
| 48 | 15.3 | 48 | J | 4.75 |
| 49 | 15.6 | 49 | J 1/2 | 5 |
| 50 | 15.9 | 50 | K | 5.5 |
| 51 | 16.2 | 51 | L | 6 |
| 52 | 16.6 | 52 | M | 6.25 |
| 53 | 16.9 | 53 | N | 6.5 |
| 54 | 17.2 | 54 | N 1/2 | 7 |
| 55 | 17.5 | 55 | O | 7.5 |
| 56 | 17.8 | 56 | P | 8 |
| 57 | 18.1 | 57 | P 1/2 | 8.5 |
| 58 | 18.5 | 58 | Q | 8.75 |
| 59 | 18.8 | 59 | R | 9 |
| 60 | 19.1 | 60 | S | 9.5 |
| 61 | 19.4 | 61 | S 1/2 | 9.75 |
| 62 | 19.7 | 62 | T | 10 |
| 63 | 20.1 | 63 | T 1/2 | 10.25 |
| 64 | 20.4 | 64 | U | 10.5 |
| 65 | 20.7 | 65 | V | 11 |
| 66 | 21.0 | 66 | W | 11.25 |
| 67 | 21.3 | 67 | W 1/2 | 11.5 |
| 68 | 21.7 | 68 | X | 12 |
| 69 | 22.0 | 69 | Y | 12.25 |
| 70 | 22.3 | 70 | Z | 12.5 |