Ring Size Guide
All our rings are listed in US sizes. Use one of the two methods below, then check the table. Every ring page also has a Find My Ring Size tool that does the conversion for you.
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 lay it flat and measure the length in millimetres. That is the circumference.
- Find the closest circumference in the table. If you fall between two sizes, choose the larger one.
Measure a ring that fits
Measure straight across the inside of a ring that already fits the same finger, edge to edge, in millimetres. That is the inside diameter; find the closest diameter in the table.
Ring size chart
| US size | Circumference (mm) | Inside diameter (mm) | UK & Australia | Europe |
|---|---|---|---|---|
| 3 | 44.2 | 14.1 | F | 44 |
| 3.5 | 45.5 | 14.5 | G | 45.5 |
| 4 | 46.8 | 14.9 | H | 47 |
| 4.5 | 48.0 | 15.3 | I | 48 |
| 5 | 49.3 | 15.7 | J½ | 49 |
| 5.5 | 50.6 | 16.1 | K½ | 50.5 |
| 6 | 51.9 | 16.5 | L½ | 52 |
| 6.5 | 53.1 | 16.9 | M½ | 53 |
| 7 | 54.4 | 17.3 | N½ | 54.5 |
| 7.5 | 55.7 | 17.7 | O½ | 55.5 |
| 8 | 57.0 | 18.1 | P½ | 57 |
| 8.5 | 58.3 | 18.6 | Q½ | 58.5 |
| 9 | 59.5 | 18.9 | R½ | 59.5 |
| 9.5 | 60.8 | 19.4 | S½ | 61 |
| 10 | 62.1 | 19.8 | T½ | 62 |
| 10.5 | 63.4 | 20.2 | U½ | 63.5 |
| 11 | 64.6 | 20.6 | V½ | 64.5 |
| 11.5 | 65.9 | 21.0 | W½ | 66 |
| 12 | 67.2 | 21.4 | X½ | 67 |
| 12.5 | 68.5 | 21.8 | Z | 68.5 |
| 13 | 69.7 | 22.2 | Z+1 | 70 |
Tips for the right fit
- Measure at the end of the day, when fingers are warm. Cold fingers measure smaller.
- The ring has to pass over the knuckle, so check that it slides over comfortably.
- Wide bands, around 6 mm and up, fit more snugly. Many people go up half a size.
- Buying as a surprise? Borrow a ring they wear on the same finger and measure its inside diameter.
Not sure? Ask us before you order. Return eligibility depends on each product: check the product page for "30-Day Returns" or "Final Sale", and see our refund policy.