Every ring is listed in its US size — here's how to find yours so you know it fits before it ships.
Measure a ring you own
Take a ring that fits the right finger and measure straight across the inside — the diameter — in millimeters. Match it to the chart below.
Wrap method
Wrap a strip of paper or string around the base of your finger, mark where it overlaps, lay it flat, and measure the length. That's your circumference — match it to the chart.
No tape measure? Print our ring sizer (PDF) — set your printer to 100% and size a ring you own at home.
Tips
- Measure at the end of the day, when your hands are warmest — fingers shrink in the cold.
- A wide band fits tighter than a thin one — size up a half for wide pieces.
- Your dominant hand usually runs a touch larger.
- Make sure the ring clears your knuckle — it's often the widest point of the finger.
- Made-to-order pieces can be built to your exact size — just ask.
| US Size | Inside Ø | Circumference |
|---|
| 4 | 14.9 mm | 46.8 mm |
| 4.5 | 15.3 mm | 48.0 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 | 18.1 mm | 57.0 mm |
| 8.5 | 18.5 mm | 58.3 mm |
| 9 | 19.0 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 | 21.0 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 |
