Ring Size Guide
Ring Size Guide
Finding your correct ring size is important to ensure your ring fits comfortably. Use one of the methods below, then refer to our size chart.
Method 1 — Measure a Ring You Own
- Place the ring on a ruler
- Measure the internal diameter in millimetres
- Match to our size chart below
Method 2 — Measure Your Finger
- Wrap a thin strip of paper around your finger
- Mark where it overlaps
- Measure the length in mm — this is your circumference
- Match to our size chart below
Tip: Fingers are slightly larger in the evening and when warm. Measure at the end of the day for the most accurate fit. If between sizes, size up.
UK Ring Size Chart
| UK Size | Diameter (mm) | Circumference (mm) | US Size |
|---|---|---|---|
| H | 15.1 | 47.4 | 3½ |
| H½ | 15.3 | 48.0 | 3¾ |
| I | 15.5 | 48.7 | 4 |
| I½ | 15.7 | 49.3 | 4¼ |
| J | 15.9 | 50.0 | 4½ |
| J½ | 16.1 | 50.6 | 4¾ |
| K | 16.3 | 51.2 | 5 |
| K½ | 16.5 | 51.9 | 5¼ |
| L | 16.7 | 52.5 | 5½ |
| L½ | 16.9 | 53.1 | 5¾ |
| M | 17.1 | 53.8 | 6 |
| M½ | 17.3 | 54.4 | 6¼ |
| N | 17.5 | 55.0 | 6½ |
| N½ | 17.7 | 55.7 | 6¾ |
| O | 17.9 | 56.3 | 7 |
| O½ | 18.1 | 56.9 | 7¼ |
| P | 18.3 | 57.6 | 7½ |
| P½ | 18.5 | 58.2 | 7¾ |
| Q | 18.7 | 58.9 | 8 |
| Q½ | 18.9 | 59.5 | 8¼ |
| R | 19.1 | 60.1 | 8½ |
| R½ | 19.3 | 60.8 | 8¾ |
| S | 19.5 | 61.4 | 9 |
| S½ | 19.7 | 62.1 | 9¼ |
| T | 19.9 | 62.7 | 9½ |
| T½ | 20.1 | 63.3 | 9¾ |
| U | 20.3 | 64.0 | 10 |
| U½ | 20.5 | 64.6 | 10¼ |
| V | 20.7 | 65.2 | 10½ |
| V½ | 20.9 | 65.9 | 10¾ |
| W | 21.1 | 66.5 | 11 |
| W½ | 21.3 | 67.2 | 11¼ |
| X | 21.5 | 67.8 | 11½ |
| X½ | 21.7 | 68.4 | 11¾ |
| Y | 21.9 | 69.1 | 12 |
| Y½ | 22.1 | 69.7 | 12¼ |
| Z | 22.3 | 70.3 | 12½ |
| Z+1 | 22.7 | 71.3 | 13 |
| Z+2 | 23.1 | 72.6 | 13½ |
| Z+3 | 23.5 | 73.9 | 14 |