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.
| 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 |
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.
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.
