Method 1: measure a ring you already own
- Choose a ring that fits the intended finger comfortably.
- Measure the inside diameter (edge to edge across the centre) in millimetres.
- Find the closest diameter in the chart below.
Method 2: measure your finger
- Wrap a thin strip of paper or non-stretch string around the base of your finger.
- Mark where it overlaps, then measure the length in millimetres — this is your circumference.
- Find the closest circumference in the chart. If you are between sizes, choose the larger.
Size chart
| UK | US | Inside circumference (mm) | Inside diameter (mm) |
|---|---|---|---|
| H½ | 4 | 46.8 | 14.9 |
| I½ | 4½ | 48.0 | 15.3 |
| J½ | 5 | 49.3 | 15.7 |
| K½ | 5½ | 50.6 | 16.1 |
| L½ | 6 | 51.9 | 16.5 |
| M½ | 6½ | 53.1 | 16.9 |
| N½ | 7 | 54.4 | 17.3 |
| O½ | 7½ | 55.7 | 17.7 |
| P½ | 8 | 57.0 | 18.1 |
| Q½ | 8½ | 58.3 | 18.6 |
| R½ | 9 | 59.5 | 18.9 |
| S½ | 9½ | 60.8 | 19.4 |
| T½ | 10 | 62.1 | 19.8 |
| U½ | 10½ | 63.4 | 20.2 |
| V½ | 11 | 64.6 | 20.6 |
Measurements are approximate. Rounded to one decimal place.
Tips for an accurate size
- Measure at the end of the day when fingers are warmest and largest.
- Avoid measuring when cold — fingers shrink in low temperatures.
- Wide bands (over 4mm) fit more snugly — consider going up half a size.
- If your knuckle is larger than the base of your finger, measure both and choose a size in between.
Buying a surprise? Choose “Not sure — please advise” when ordering, and our team will help. Ask us about resizing options on WhatsApp.