Find Your Perfect Fit.
How to Use the Table Measure the Finger:
- Use a ring sizer or a piece of string to measure the circumference of the finger.
- Alternatively, measure the diameter of an existing ring that fits well.
Match the Measurement:
- Find the closest Diameter or Circumference in the table.
- Check the corresponding size for the region (USA, Asia, Europe, etc.).
Additional Notes
- USA Sizes: Commonly used in North America.
- Asia Sizes: Based on Chinese and Japanese sizing standards.
- Europe Sizes: Based on the inner circumference in millimeters.
- UK Sizes: Uses alphabetical sizing (e.g., F½, G½, etc.).
| Diameter (mm) | Circumference (mm) | USA & Canada | Asia (China/Japan) | Europe | UK & Australia |
|---|---|---|---|---|---|
| 14.1 mm | 44.2 mm | 3 | 4 | 44 | F1/2 |
| 14.5 mm | 45.5 mm | 4 | 5 | 45.5 | G1/2 |
| 14.9 mm | 46.8 mm | 5 | 6 | 47 | H1/2 |
| 15.3 mm | 48.0 mm | 6 | 7 | 48 | I1/2 |
| 15.7 mm | 49.3 mm | 7 | 8 | 49 | J1/2 |
| 16.1 mm | 50.6 mm | 8 | 9 | 50.5 | L |
| 16.5 mm | 51.9 mm | 9 | 10 | 52 | M |
| 16.9 mm | 53.1 mm | 10 | 11 | 53 | N |
| 17.3 mm | 54.4 mm | 11 | 12 | 54 | O |
| 17.7 mm | 55.7 mm | 12 | 13 | 55.5 | P |
| 18.1 mm | 57.0 mm | 13 | 14 | 57 | Q |
| 18.5 mm | 58.3 mm | 14 | 15 | 58 | R |
| 18.9 mm | 59.5 mm | 15 | 16 | 59.5 | S |
| 19.3 mm | 60.8 mm | 16 | 17 | 61 | T |
| 19.7 mm | 62.1 mm | 17 | 18 | 62 | U |
| 20.1 mm | 63.4 mm | 18 | 19 | 63.5 | V |
| 20.5 mm | 64.6 mm | 19 | 20 | 64.5 | W |
| 20.9 mm | 65.9 mm | 20 | 21 | 66 | X |
| 21.3 mm | 67.2 mm | 21 | 22 | 67.5 | Y |
| 21.7 mm | 68.5 mm | 22 | 23 | 68.5 | Z |
| 22.1 mm | 69.7 mm | 23 | 24 | 70 | Z+1 |