Free Self-Service Tool
Find Your Size at Home
Measure your ring, finger, wrist, or chain with a ruler — we'll convert it instantly. No guessing, no app needed.
How to Measure Your Ring
Place the ring flat on a ruler. Measure the inside of the ring from one inner edge to the other — that's the inside diameter. Enter it in millimeters below.
Typical women's sizes: 14.8–17.3 mm · Men's: 18–21 mm
Don't Have a Ring? Measure Your Finger Instead
- Step 1. Cut a thin strip of paper about ½ inch wide.
- Step 2. Wrap it snugly around the base of the finger you want to size.
- Step 3. Mark where the paper overlaps with a pen.
- Step 4. Lay the strip flat and measure the length in mm — that's your finger circumference.
- Step 5. Enter it below.
Tip: Measure at the end of the day when fingers are slightly larger. Avoid measuring when cold.
Full US Ring Size Chart
All measurements are inside diameter. Women's sizes typically range from 5–7; men's from 8–12.
| US Size | Diameter (mm) | Circumference (mm) |
|---|---|---|
| 3 | 14.1 mm | 44.2 mm |
| 3.5 | 14.5 mm | 45.5 mm |
| 4 | 14.8 mm | 46.8 mm |
| 4.5 | 15.3 mm | 48 mm |
| 5 | 15.7 mm | 49.3 mm |
| 5.5 | 16.1 mm | 50.6 mm |
| 6 | 16.5 mm | 51.9 mm |
| 6.5 | 16.9 mm | 53.1 mm |
| 7 | 17.3 mm | 54.4 mm |
| 7.5 | 17.7 mm | 55.7 mm |
| 8 | 18.2 mm | 57 mm |
| 8.5 | 18.6 mm | 58.3 mm |
| 9 | 19 mm | 59.5 mm |
| 9.5 | 19.4 mm | 60.8 mm |
| 10 | 19.8 mm | 62.1 mm |
| 10.5 | 20.2 mm | 63.4 mm |
| 11 | 20.6 mm | 64.6 mm |
| 11.5 | 21 mm | 65.9 mm |
| 12 | 21.4 mm | 67.2 mm |
| 12.5 | 21.8 mm | 68.5 mm |
| 13 | 22.2 mm | 69.7 mm |
Need your ring resized? We do it in-house — usually ready in 3–5 business days.
Drop off in Park Slope or ship to us from anywhere in the US.
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