How to measure your ring size
- Wrap a thin strip of paper or a piece of string snugly around the base of your finger.
- Mark where the strip meets, then measure that length in millimetres — this is your finger circumference.
- Compare it with the table below. If you are between two sizes, choose the larger one.
- Measure at the end of the day, when your fingers are at their largest, and avoid measuring when you are cold.
For the most reliable result, have a jeweller measure you with a ring gauge.
Conversion chart
| US size | UK / AU size | EU size | Inside diameter (mm) | Circumference (mm) |
|---|---|---|---|---|
| 4 | H | 47 | 14.9 | 46.8 |
| 5 | J½ | 49 | 15.7 | 49.3 |
| 6 | L½ | 52 | 16.5 | 51.9 |
| 7 | N½ | 54 | 17.3 | 54.4 |
| 8 | P½ | 57 | 18.1 | 57.0 |
| 9 | R½ | 59 | 18.9 | 59.5 |
| 10 | T½ | 62 | 19.8 | 62.1 |
| 11 | V½ | 64 | 20.6 | 64.6 |
| 12 | X½ | 67 | 21.4 | 67.2 |
Adjustable rings
Some of our rings are described as adjustable. Those rings fit a range of sizes and can be gently opened or closed to fit; take care not to bend them repeatedly.
Still not sure?
Email vivien@vivienperte.com with the ring you are considering and your measurement, and we will help you choose.