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Size guide
How to measure your ring size accurately, and our international conversion chart.
Ring size - how to measure
The most reliable method is to have your finger measured by a professional with a ring sizer: your usual jeweller can measure it for you, or lend you a sizer.
Otherwise, our printable ring sizer below works in two ways: lay a ring that already fits on the printed circles to read its size, or measure around your finger with a thin strip of paper.
View our ring sizerTips for an accurate measurement:
- Measure at the end of the day, when fingers are slightly larger.
- Avoid measuring in cold weather.
- For a wide band (over 6 mm), consider going up half a size.
- Between two sizes, choose the larger one.
Torn between two sizes? Up to two free resizings are included within 30 days of receipt, at the studio or with a partner jeweller chosen by the studio.
Ring size conversion chart
| France / EU (mm) | USA / Canada | UK / Australia | Diameter (mm) |
|---|---|---|---|
| 46 | 3¾ | G½ | 14.6 mm |
| 47 | 4¼ | H½ | 15.0 mm |
| 48 | 4½ | I½ | 15.3 mm |
| 49 | 5 | J | 15.6 mm |
| 50 | 5¼ | K | 15.9 mm |
| 51 | 5¾ | K½ | 16.2 mm |
| 52 | 6¼ | L½ | 16.6 mm |
| 53 | 6½ | M½ | 16.9 mm |
| 54 | 7 | N | 17.2 mm |
| 55 | 7¼ | O | 17.5 mm |
| 56 | 7½ | O½ | 17.8 mm |
| 57 | 8 | P½ | 18.1 mm |
| 58 | 8½ | Q½ | 18.5 mm |
| 59 | 8¾ | R | 18.8 mm |
| 60 | 9¼ | S | 19.1 mm |
| 61 | 9½ | T | 19.4 mm |
| 62 | 10 | T½ | 19.7 mm |
| 63 | 10½ | U½ | 20.1 mm |
| 64 | 10¾ | V½ | 20.4 mm |