Method 1 — Measure an existing ring
Place a ring that fits well on a ruler and measure the inner diameter in millimeters. Use the chart below to find your size.
| Inner Diameter (mm) | US Ring Size |
|---|---|
| 14.9 | 4 |
| 15.3 | 4.5 |
| 15.7 | 5 |
| 16.1 | 5.5 |
| 16.5 | 6 |
| 16.9 | 6.5 |
| 17.3 | 7 |
| 17.7 | 7.5 |
| 18.2 | 8 |
| 18.6 | 8.5 |
| 19.0 | 9 |
Method 2 — Wrap and measure
Wrap a thin strip of paper around your finger, mark where it overlaps, and measure the length in mm. Divide by 3.14 to get the diameter, then use the chart above.
Tips
- Fingers are slightly larger in the evening and in warm weather — measure then for the best fit.
- Wide bands fit more snugly; consider sizing up half a size.
- Not sure? We recommend sizing up — rings can be resized down more easily.
Still unsure? Bring the ring in and we’ll size it for you at our Vacaville showroom.
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