Ring Size Guide | Australian Sizing
How to Measure Your Ring Size
Finding the right ring size is easy. Use the guide below to find your perfect fit before selecting a size on any of our ring product pages.
Method 1 — Measure an existing ring
Place a ring that fits well on a ruler and measure the inner diameter in millimetres. Match it to the table below.
Method 2 — Measure your finger
Wrap a thin strip of paper around your finger, mark where it overlaps, then measure the length in millimetres. Divide by 3.14 to get the inner diameter.
Tips: Measure at the end of the day when fingers are slightly larger — fingers tend to swell throughout the day. If you are between two sizes, we recommend choosing the larger size for comfort.
Australian Ring Size Chart
| AU / UK Size | Inner Diameter (mm) | Circumference (mm) |
|---|---|---|
| H | 14.9 | 46.8 |
| I | 15.3 | 48.0 |
| J | 15.7 | 49.3 |
| K | 16.1 | 50.6 |
| L | 16.5 | 51.8 |
| M | 16.9 | 53.1 |
| N | 17.3 | 54.4 |
| O | 17.7 | 55.6 |
| P | 18.2 | 57.2 |
| Q | 18.6 | 58.4 |
| R | 19.0 | 59.7 |
| S | 19.4 | 60.9 |
| T | 19.8 | 62.2 |
All measurements are in millimetres (mm).
International Size Conversion
AU/UK sizes use letters. US sizes are numerical codes (decimals shown for precision). EU sizes correspond to your finger’s circumference in millimetres.
| AU / UK | US Size | EU Size |
|---|---|---|
| H | 4.0 | 47 |
| I | 4.25 | 48 |
| J | 4.75 | 49 |
| K | 5.25 | 50 |
| L | 5.75 | 52 |
| M | 6.0 | 53 |
| N | 6.75 | 54 |
| O | 7.25 | 56 |
| P | 7.75 | 57 |
| Q | 8.25 | 58 |
| R | 8.75 | 60 |
| S | 9.25 | 61 |
| T | 9.75 | 62 |
Still Not Sure?
Every finger is unique — we’re here to help you find your perfect fit. We recommend visiting a local jeweller for a professional ring sizing. Most jewellers offer this service free of charge.
If you have any questions, please contact us and our team will be happy to help.