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Ring Size Guide
Find Your Perfect Fit
A ring should fit comfortably—snug enough not to fall off, but loose enough to slide over your knuckle with slight resistance. Follow our measurement guides below to find your size.
Ring Size Conversion Chart
| US Size | Inside Circumference (mm) | Inside Diameter (mm) |
|---|---|---|
| US 3 | 44.2 mm | 14.1 mm |
| US 4 | 46.8 mm | 14.9 mm |
| US 5 | 49.3 mm | 15.7 mm |
| US 6 | 51.9 mm | 16.5 mm |
| US 7 | 54.4 mm | 17.3 mm |
| US 8 | 57.0 mm | 18.1 mm |
| US 9 | 59.5 mm | 18.9 mm |
| US 10 | 62.1 mm | 19.8 mm |
| US 11 | 64.6 mm | 20.6 mm |
| US 12 | 67.2 mm | 21.4 mm |
Quick Measurement Tip
- Wrap a strip of paper or non-stretchy string around the base of your finger.
- Mark the spot where the paper/string overlaps.
- Measure the length of the paper/string in millimeters with a ruler (this represents the circumference).
- Compare your measurement against the chart on the left to find your size!
Important Factors to Remember
- Temperature: Fingers expand in warm weather and shrink in cold weather. Measure at room temperature.
- Knuckles: If your knuckle is significantly larger than the base of your finger, choose the size in between the two measurements.
- Band Width: Wider ring bands (above 5mm) fit tighter. We recommend sizing up by a half size if choosing a thick band.