Find your fit
Ring Size Guide
Three ways to find your size — measure a ring you already own, measure your finger, or use our on-screen sizer. If our stocked size is not yours, we will alter it for you.
1 Measure on screen
Place a ring you already wear against the circle below and adjust until they match. Calibrate your screen first so the circle is drawn at true size.
Step 1 — Calibrate your screen
Hold any bank card against the rectangle and drag the slider until they are exactly the same width. Every bank card in the world is the same size, which makes this reliable on any device.
Step 2 — Match your ring
Rest the ring on the circle. Adjust until the inner edge of your ring lines up with the edge of the circle.
On-screen measuring is a good guide, not a guarantee. If you are between two sizes, or the ring is a gift, message us and we will help.
2 Measure a ring you own
- Choose a ring that fits the finger you have in mind.
- Lay it flat against a ruler and measure straight across the inside, edge to edge.
- That measurement is the inner diameter in millimetres — find it in the chart below.
3 Measure your finger
- Cut a thin strip of paper or use a length of thread.
- Wrap it around the base of your finger — snug, but loose enough to slide over the knuckle.
- Mark where it overlaps, lay it flat against a ruler, and read the length.
- That length is the circumference in millimetres — find it in the chart below.
Worth knowing
- Measure at the end of the day. Fingers are at their largest when warm, and smallest first thing in the morning or in cold weather.
- Wide bands sit more snugly than fine ones. For a band over 6 mm wide, consider going up a half size.
- The ring has to pass the knuckle. If your knuckle is larger than the base of the finger, size for the knuckle.
- Measure the exact finger you intend to wear it on — the two hands are rarely the same.
4 Size conversion chart
Find your diameter or circumference in the first two columns, then read across for your size in any system.
| Diameter | Circumference | US | Indian | UK | EU |
|---|---|---|---|---|---|
| 14.1 mm | 44.2 mm | 3 | 4 | F | 44 |
| 14.5 mm | 45.5 mm | 3.5 | 5 | G | 46 |
| 14.9 mm | 46.8 mm | 4 | 7 | H½ | 47 |
| 15.3 mm | 48 mm | 4.5 | 8 | I½ | 48 |
| 15.7 mm | 49.3 mm | 5 | 9 | J½ | 49 |
| 16.1 mm | 50.6 mm | 5.5 | 10 | K½ | 51 |
| 16.5 mm | 51.8 mm | 6 | 12 | L½ | 52 |
| 16.9 mm | 53.1 mm | 6.5 | 13 | M½ | 53 |
| 17.3 mm | 54.4 mm | 7 | 14 | N½ | 54 |
| 17.7 mm | 55.7 mm | 7.5 | 15 | O½ | 56 |
| 18.2 mm | 57 mm | 8 | 16 | P½ | 57 |
| 18.6 mm | 58.3 mm | 8.5 | 17 | Q½ | 58 |
| 19 mm | 59.5 mm | 9 | 18 | R½ | 59 |
| 19.4 mm | 60.8 mm | 9.5 | 19 | S½ | 61 |
| 19.8 mm | 62.1 mm | 10 | 20 | T½ | 62 |
| 20.2 mm | 63.5 mm | 10.5 | 21 | U½ | 63 |
| 20.6 mm | 64.6 mm | 11 | 22 | V½ | 65 |
| 21 mm | 65.9 mm | 11.5 | 23 | W½ | 66 |
| 21.4 mm | 67.2 mm | 12 | 24 | Y | 67 |
| 21.8 mm | 68.5 mm | 12.5 | 25 | Z | 68 |
| 22.2 mm | 69.7 mm | 13 | 26 | Z+1 | 70 |