Rings Size Chart
A ring that fits well gets worn every day. One that doesn't tends to live in a drawer. The chart below covers UK, US and EU sizes, and the two methods underneath show simple ways to measure at home using things you already have. If you're unsure, email us at info@abiza.co.uk and we'll talk it through.
Ring size chart — UK, US and EU
| Inside diameter (mm) | UK size | US size | EU size |
|---|---|---|---|
| 14.0 | G | 3½ | 44 |
| 14.4 | H | 3¾ | 45 |
| 14.8 | I | 4½ | 46 |
| 15.2 | J | 5 | 47 |
| 15.6 | K | 5½ | 48 |
| 16.0 | L | 6 | 49 |
| 16.5 | M | 6½ | 50 |
| 16.9 | N | 7 | 51 |
| 17.3 | O | 7½ | 52 |
| 17.7 | P | 8 | 53 |
| 18.1 | Q | 8½ | 54 |
| 18.5 | R | 9 | 55 |
| 19.0 | S | 9¾ | 57 |
| 19.4 | T | 10¼ | 58 |
| 19.8 | U | 10½ | 59 |
| 20.2 | V | 11 | 60 |
| 20.6 | W | 11½ | 61 |
| 21.1 | X | 12 | 62 |
| 21.5 | Y | 12½ | 63 |
| 21.9 | Z | 13 | 65 |
How to measure your ring size at home
You don't need a ring sizer to get a reliable measurement. Two methods work well — pick whichever is easier with what you have to hand.
Method 1 — Measure a ring you already own
Find a ring that fits the right finger comfortably. Lay it flat and measure the inside diameter (edge to edge across the inside of the band) in millimetres using a ruler. Match that measurement to the chart above to find your size.
This is the most accurate method if you already have a well-fitting ring to copy.
Method 2 — Use a piece of string
- Take a piece of string, ribbon or thin paper strip.
- Wrap it around the base of the finger you want to size.
- Mark where it overlaps with a pen.
- Lay the string flat and measure the length