Ring size guide
Rings are sized differently around the world. The United States and Canada use numbers; the United Kingdom, Australia and New Zealand use letters. Find your size in any of the columns below – the millimetres are the same everywhere.
The easiest way: measure a ring you already wear
Take a ring that fits the finger you have in mind. Measure the inside, from edge to edge, in millimetres. That is the diameter – find it in the table.
No ring at hand? Use a strip of paper
- Wrap a thin strip of paper or string around the base of your finger.
- Mark where the ends meet.
- Lay it flat and measure the length in millimetres. That is the circumference – find it in the table.
Good to know
- Measure at the end of the day, when your hands are warm – fingers are slightly larger then.
- If your knuckle is larger than the base of your finger, measure the knuckle: the ring has to slide over it.
- Between two sizes? Choose the larger one.
- For wide bands, go half a size up.
Our rings are stocked in US 6, 7, 8 and 9 (UK L½, O, Q and R½). The other rows are here so you can see where your size sits; if yours is not in our range, email us and we will tell you when it is back.
| US / Canada | UK / Australia / New Zealand | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 4 | H | 14.9 | 46.8 |
| 5 | J½ | 15.7 | 49.3 |
| 6 | L½ | 16.5 | 51.9 |
| 7 | O | 17.3 | 54.4 |
| 8 | Q | 18.1 | 57.0 |
| 9 | R½ | 19.0 | 59.5 |
| 10 | T½ | 19.8 | 62.1 |
| 11 | V½ | 20.6 | 64.6 |
| 12 | Y | 21.4 | 67.2 |
| 13 | Z+1 | 22.2 | 69.7 |
Conversions between the US and UK systems can differ slightly between charts. When in doubt, go by the millimetres. Still unsure? Send us a message and we'll help you choose.