Ring size conversion chart
Compare Australian and UK letter sizes with US and Canada sizes. Choose the US size in the ring product selector.
Conversions follow our existing chart. Confirm your fit with a ring sizer; band width and comfort-fit profiles can affect how a ring feels.
View the accessible text table
Australian / UK to US / Canada sizes
| AU / UK | US / Canada |
|---|---|
| B | 1 |
| C | 1 1/2 |
| D | 2 |
| E | 2 1/2 |
| F | 3 |
| G | 3 3/8 |
| H | 3 3/4 |
| H 1/2 | 4 |
| I | 4 1/4 |
| I 1/2 | 4 1/2 |
| J | 4 5/8 |
| J 1/4 | 4 3/4 |
| J 1/2 | 5 |
| K | 5 1/8 |
| K 1/4 | 5 1/4 |
| K 1/2 | 5 3/8 |
| L | 5 1/2 |
| L 1/4 | 5 3/4 |
| L 1/2 | 5 7/8 |
| M | 6 |
| M 1/2 | 6 1/4 |
| N | 6 1/2 |
| N 1/2 | 6 3/4 |
| O | 7 |
| O 1/2 | 7 1/4 |
| P | 7 1/2 |
| P 1/2 | 7 3/4 |
| Q | 8 |
| Q 1/2 | 8 1/4 |
| Q 3/4 | 8 1/2 |
| R | 8 5/8 |
| R 1/4 | 8 3/4 |
| R 1/2 | 8 7/8 |
| R 3/4 | 9 |
| S | 9 1/8 |
| S 1/4 | 9 1/4 |
| S 1/2 | 9 3/8 |
| S 3/4 | 9 1/2 |
| T | 9 5/8 |
| T 1/4 | 9 3/4 |
| T 1/2 | 10 |
| U | 10 1/4 |
| U 1/2 | 10 1/2 |
| V | 10 5/8 |
| V 1/4 | 10 3/4 |
| V 1/2 | 11 |
| W | 11 1/8 |
| W 1/4 | 11 1/4 |
| W 1/2 | 11 3/8 |
| W 3/4 | 11 1/2 |
| X | 11 5/8 |
| X 1/4 | 11 3/4 |
| X 1/2 | 11 7/8 |
| Y | 12 |
| Y 1/2 | 12 1/4 |
| Z | 12 1/2 |
| Z + 1/2 | 12 3/4 |
| Z + 1 | 13 |
| Z + 1.5 | 13.5 |
| Z + 2 | — |
| Z + 2.5 | — |
| Z + 3 | — |
| Z + 3.5 | — |
| Z + 4 | — |
| Z + 4.5 | — |
| Z + 5 | — |
| Z + 6 | — |