Ring Size Chart
| Circumference mm | Diameter mm | Ring size | Ring size EU | Ring size UK | Ring size USA |
|---|---|---|---|---|---|
| 37.8 | 12.04 | 12 | 38 | A | 0.5 |
| 39.1 | 12.45 | 12.5 | 39 | B | 1 |
| 40.4 | 12.85 | 13 | 40 | C | 1.5 |
| 41.7 | 13.36 | 13.5 | 42 | D | 2 |
| 42.9 | 13.67 | 13.5 | 43 | E | 2.5 |
| 44.2 | 14.07 | 14 | 44 | F | 3 |
| 45.5 | 14.48 | 14.5 | 45 | G | 3.5 |
| 46.8 | 14.88 | 15 | 47 | H | 4 |
| 48 | 15.29 | 15 | 48 | I | 4.5 |
| 48.7 | 15.49 | 15.5 | 49 | J | 5 |
| 50 | 15.9 | 16 | 50 | K | 5.5 |
| 51.2 | 16.31 | 16 | 51 | L | 6 |
| 52.5 | 16.71 | 16.5 | 52 | M | 6.5 |
| 53.8 | 17.12 | 17 | 54 | N | 7 |
| 55.1 | 17.53 | 17.5 | 55 | O | 7.5 |
| 56.3 | 17.93 | 18 | 56 | P | 8 |
| 57.6 | 18.34 | 18 | 58 | Q | 8.5 |
| 58.9 | 18.75 | 18.5 | 59 | R | 9 |
| 60.2 | 19.15 | 19 | 60 | S | 9.5 |
| 61.4 | 19.56 | 19.5 | 61 | T | 10 |
| 62.7 | 19.96 | 20 | 63 | U | 10.5 |
| 64 | 20.37 | 20 | 64 | V | 11 |
| 65.3 | 20.78 | 20.5 | 65 | W | 11.5 |
| 66.6 | 21.18 | 21 | 67 | X | 12 |
| 67.8 | 21.59 | 21.5 | 68 | Y | 12.5 |
| 68.5 | 21.79 | 22 | 67 | Z | 13 |
Ring Size Tips
- Our dominant hands are generally slightly larger – measure the hand you plan to wear the ring on.
- Consider the design of your ring. Rings with wider bands will fit tighter. Plan to size up by at least a half size for chunky bands (>4mm) and size down accordingly for very thin designs (<1.3mm). Note that ring sizes are generally measured in millimeters (mm) and are not sized by inch.
- Ensure your body temperature is normal – fingers tend to shrink when cold and expand when hot.
- Fingers change size throughout the day based on the water we drink and the food we eat – the best time to measure is towards the middle or end of the day.
- If your knuckle is pronounced, you may want to measure both the knuckle and the base of the finger. Then, choose a size in between those measurements as rings need to fit over the knuckle but not be too loose or tight to wear comfortably.