December 8, 2025
Before measuring your ring size, keep these important factors in mind for accurate results:
This technique works when you don't have a properly fitting ring for reference. You'll need:
Use this approach when you have a well-fitting ring available. Required materials:
| Diameter (cm) | Inner Circumference (cm) | Men's US Size | Women's US Size |
|---|---|---|---|
| 4.5 - 4.9 | 1.5 | 5 | 4 |
| 5.0 - 5.5 | 1.6 | 6 | 5 |
| 5.6 - 5.9 | 1.7 | 7 | 6 |
| 6.0 - 6.4 | 1.8 | 8 | 7 |
| 6.5 - 6.9 | 1.9 | 9 | 8 |
| 7.0 - 7.3 | 2.0 | 10 | 9 |
| 7.4 - 7.8 | 2.1 | 11 | 10 |
| 7.9 - 8.3 | 2.2 | 12 | 11 |
| 8.4 - 8.6 | 2.3 | 13 | 12 |
| 8.7 - 9.1 | 2.4 | 14 | 13 |
| 9.2 | 2.5 | 15 | 14 |
| US Size | Asian Size |
|---|---|
| 5 | 9, 10, 11 |
| 6 | 12, 13 |
| 7 | 14, 15, 16 |
| 8 | 17, 18 |
| 9 | 19, 20, 21 |
| 10 | 22, 23 |
| 11 | 24, 25 |
| 12 | 26, 27, 28 |
| 13 | 29, 30, 31 |
| 14 | 32, 33, 34 |
Due to increased surface contact, wide bands often feel tighter. Consider sizing up by half or a full size for comfortable wear.
The setting and stone size may affect fit. Account for both the diamond dimensions and band shape when determining size.
Measure both partners' fingers separately, as men's and women's sizing typically differs significantly.