Our rings are sized in the European system, which is simply the inside circumference of the ring in millimetres — a ring marked #56 or Ø56 measures 56 mm around the inside. Use the table below to find your US or UK equivalent.
| Our size (EU) | Inside circumference | Inside diameter | US / Canada | UK / Australia |
|---|---|---|---|---|
| 44 | 44.2 mm | 14.1 mm | 3 | F½ |
| 47 | 46.8 mm | 14.9 mm | 4 | H½ |
| 48 | 48.0 mm | 15.3 mm | 4½ | I½ |
| 49 | 49.3 mm | 15.7 mm | 5 | J½ |
| 50.5 | 50.6 mm | 16.1 mm | 5½ | K½ |
| 52 | 51.9 mm | 16.5 mm | 6 | L½ |
| 53 | 53.1 mm | 16.9 mm | 6½ | M½ |
| 54.5 | 54.4 mm | 17.3 mm | 7 | N½ |
| 56 | 55.7 mm | 17.7 mm | 7½ | O½ |
| 57 | 57.0 mm | 18.1 mm | 8 | P½ |
| 58 | 58.3 mm | 18.5 mm | 8½ | Q½ |
| 59.5 | 59.5 mm | 18.9 mm | 9 | R½ |
| 61 | 60.8 mm | 19.4 mm | 9½ | S½ |
| 62 | 62.1 mm | 19.8 mm | 10 | T½ |
| 63.5 | 63.4 mm | 20.2 mm | 10½ | U½ |
| 64.5 | 64.6 mm | 20.6 mm | 11 | V½ |
| 66 | 65.9 mm | 21.0 mm | 11½ | W½ |
| 67 | 67.2 mm | 21.4 mm | 12 | X½ |
How to measure at home
- From a ring you own: measure the inside diameter of a ring that fits the right finger, edge to edge in millimetres, and find the closest diameter in the table.
- With paper or string: wrap a thin strip around the base of your finger, mark where it overlaps, then measure the length in millimetres — that is your circumference, and your EU size.
- Measure at the end of the day, when fingers are slightly larger, and make sure the ring will still slide over your knuckle.
Not sure? Ask us
Visit our showroom on Wharf Road for a free professional sizing, or message us on WhatsApp and we will help you choose. Many of our rings can be resized by our jewellers — ask us before you order.