Every ring listing shows its UK size (a letter, such as N or P½). Here's how to find yours.
Measure a ring you already own
Choose a ring that fits the finger you want to wear it on. Measure the inside diameter in millimetres, from inner edge to inner edge, and find the closest match in the table below.
Measure your finger
Wrap a strip of paper or thread around the base of your finger, mark where it overlaps, then measure the length in millimetres. This is your circumference. Measure at the end of the day when fingers are at their largest, and make sure it will slide over your knuckle.
UK ring size chart
| UK size | Inside diameter (mm) | Circumference (mm) |
|---|---|---|
| J | 15.6 | 49.0 |
| K | 16.0 | 50.3 |
| L | 16.4 | 51.5 |
| M | 16.8 | 52.8 |
| N | 17.2 | 54.0 |
| O | 17.6 | 55.3 |
| P | 18.0 | 56.6 |
| Q | 18.4 | 57.8 |
| R | 18.8 | 59.1 |
| S | 19.2 | 60.3 |
| T | 19.6 | 61.6 |
| U | 20.0 | 62.8 |
A half size (for example N½) sits midway between two letters. Sizes are approximate. Wide or chunky bands usually feel tighter, so you may want to go up half a size.
Not sure? Ask us and we'll measure the ring for you. Many jewellers can also resize silver rings.