Customer care
Ring size guide
Find your size at home in a few minutes — or we can measure you at a consultation in Brooklyn, NY.
Measure a ring you already wear
Lay a ring that fits the right finger on a ruler and measure the inside diameter, edge to edge, in millimetres. Find the closest diameter in the chart below.
Measure your finger
Wrap a thin strip of paper or a piece of string around the base of the finger, mark where it overlaps, then measure the length in millimetres. That's the circumference — find the closest match in the chart.
Tips for the right fit
- Measure at the end of the day, when fingers are at their largest.
- Make sure the ring will slide over your knuckle.
- Wide bands (6mm and up) fit tighter — consider a quarter to half size up.
- Between two sizes? Choose the larger one.
- Full eternity bands generally can't be resized, so measure twice.
US ring size chart
| US size | Inside diameter | Circumference |
|---|---|---|
| 3 | 14.1 mm | 44.2 mm |
| 3.5 | 14.5 mm | 45.5 mm |
| 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 | 18.6 mm | 58.3 mm |
| 9 | 18.9 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 |
Not sure? Book an appointment and we'll size you in person.