Rings Size Guide
| U.S Ring Size | Internal Diameter (mm) | Internal Diameter (in) |
|---|---|---|
| 3 | 14.0 mm | 0.55 in |
| 3.5 | 14.4 mm | 0.57 in |
| 4 | 14.8 mm | 0.58 in |
| 5 | 15.7 mm | 0.62 in |
| 6 | 16.5 mm | 0.65 in |
| 7 | 17.3 mm | 0.68 in |
|
8 |
18.1 mm |
0.73 in |
|
9 |
18.9 mm |
0.75 in |
Not sure about your ring size? Here are two simple tricks to find the perfect fit.
- Choose a ring that fits the finger you’d like to size.
- Measure the inner diameter in millimeters.
- Match your measurement to our size chart to find your perfect fit.

With just a piece of string or a thin strip of paper, you can find your size.
- Wrap it around the base of your finger, snug but not too tight.
- Mark where the ends meet.
- Lay it flat against a ruler and measure in millimeters.
- That's your finger circumference, use it find your size on our ring size chart.
- Measure at the end of the day, when your fingers are slightly larger.
- If your knuckle is wider than the base of your finger, measure both and go with a size in between.
- Measure twice to make sure.