Measure Your Finger at Home
- Choose a ring you already own that fits the correct finger.
- Use a ring sizer tool, or wrap a strip of paper/string around your finger base, mark where it overlaps.
- Measure the length (in millimetres) of the paper/string and compare with a size chart.
- When doing this, consider your knuckle size (if large, go a half size up so the ring passes over comfortably).
Tip: Measure your finger at room temperature (not too cold or hot), ideally at the end of the day when fingers are slightly larger.
* These values are approximate. Slight variations may occur between different designers.
| UK Size | Inside Diameter (mm) | Approx US Size | Approx EU Circumference (mm) |
|---|---|---|---|
| F | ~14.1 | 3 | 44 |
| G | ~14.5 | 3½ | 45¼ |
| H | ~15.0 | 4 | 46½ |
| I | ~15.6 | 5 | 49 |
| J | ~16.1 | 5½ | 50½ |
| K | ~16.5 | 6 | 51½ |
| K ½ | ~16.8 | 6½ | 52¼ |
| L | ~17.2 | 7 | 54 |
| M | ~17.6 | 7½ | 55½ |
| N | ~18.0 | 8 | 56¼ |
| O | ~18.5 | 8½ | 57¾ |
| P | ~19.0 | 9 | 60 |
| Q | ~19.5 | 9½ | 61¼ |
| R | ~20.0 | 10 | 63 |
| S | ~20.4 | 10½ | 64½ |