Method 1
Measure an existing ring
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Place an existing ring on a ruler and measure the inner diameter in millimeters. Match that diameter to the chart to find your US ring size.
Ring Size Guide
Find Your Perfect Fit
Use our guide to find your ring size before ordering.
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| Size (US) | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 3 | 14.1 | 44.2 |
| 3.5 | 14.5 | 45.5 |
| 4 | 14.9 | 46.8 |
| 4.5 | 15.3 | 48.0 |
| 5 | 15.7 | 49.3 |
| 5.5 | 16.1 | 50.6 |
| 6 | 16.5 | 51.9 |
| 6.5 | 16.9 | 53.1 |
| 7 | 17.3 | 54.4 |
| 7.5 | 17.7 | 55.7 |
| 8 | 18.1 | 57.0 |
| 8.5 | 18.5 | 58.3 |
| 9 | 19.0 | 59.5 |
| 9.5 | 19.4 | 60.8 |
| 10 | 19.8 | 62.1 |
Method 2
Measure your finger
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Wrap a thin strip of paper around your finger, mark where it overlaps, then measure the length in millimeters. That measurement is your circumference — find the closest match in the chart above.
Method 3
Print at home guide
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Use the chart on this page as your reference before ordering. For most accurate results, visit a local jeweler for a professional sizing.
Just Because Notes
A few fitting tips.
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Measure at end of day when fingers are largest.
Measure at room temperature.
If between sizes, go up half a size.
Wide bands fit tighter — consider going up half a size.
Still not sure?
Talk to an expert