Learn how to measure your ring size at home and ensure a comfortable, secure fit for any style of ring. This may not be the most accurate measurement, but it's one of the simplest ways.
Pick a string or floss and wrap it around the base of your finger.
Mark it with a pen and line that up with a ruler, take down the length in milimeters.
| US Size | Circumference (mm) | Diameter (mm) |
|---|---|---|
| 7 | 45.50 | 14.50 |
| 8 | 46.50 | 14.80 |
| 9 | 47.80 | 15.20 |
| 10 | 48.70 | 15.50 |
| 11 | 49.60 | 15.80 |
| 12 | 51.80 | 16.30 |
| 13 | 52.10 | 16.60 |
| 14 | 53.00 | 16.90 |
| 15 | 54.30 | 17.30 |
| 16 | 55.30 | 17.60 |
| 17 | 56.20 | 17.90 |
| 18 | 57.45 | 18.30 |
| 19 | 58.70 | 18.70 |
| 20 | 59.65 | 19.00 |
| 21 | 61.10 | 19.45 |
| 22 | 62.20 | 19.80 |
| 23 | 63.40 | 20.20 |
| 24 | 64.35 | 20.50 |
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