Option 1: Measure a Ring You Already Own
Choose a ring that fits the same finger you plan to wear your new ring on.
Measure the inside diameter of the ring in millimetres, making sure you measure only the open space inside the ring, not the metal. Then use our Ring Size Guide (click to open PDF). to find your matching ring size.
Option 2: Measure Your Finger
Wrap a thin strip of paper or string around the base of your finger. Mark where the ends meet.
Then lay it flat and measure the length in millimetres. This gives you your finger circumference.
Use the size chart below to find your closest ring size. If the ring falls between two sizes, order the larger size.
Size chart
| Australia / New Zealand / UK / Ireland | Inside Diameter (mm) | Inside Circumference (mm) |
|---|---|---|
| F | 14.07 | 44.2 |
| F½ | 14.27 | 44.8 |
| G | 14.48 | 45.5 |
| G½ | 14.68 | 46.1 |
| H | 14.88 | 46.8 |
| H½ | 15.09 | 47.4 |
| I | 15.29 | 48 |
| J | 15.49 | 48.7 |
| J½ | 15.70 | 49.3 |
| K | 15.90 | 50 |
| K½ | 16.10 | 50.6 |
| L | 16.31 | 51.2 |
| L½ | 16.51 | 51.9 |
| M | 16.71 | 52.5 |
| M½ | 16.92 | 53.1 |
| N | 17.12 | 53.8 |
| N½ | 17.32 | 54.4 |
| O | 17.53 | 55.1 |
| O½ | 17.73 | 55.7 |
| P | 17.93 | 56.3 |
| P½ | 18.14 | 57 |
| Q | 18.34 | 57.6 |
| Q½ | 18.54 | 58.3 |
| R | 18.75 | 58.9 |
| R½ | 18.95 | 59.5 |
| S | 19.15 | 60.2 |
| S½ | 19.35 | 60.8 |
| T | 19.56 | 61.4 |
| T½ | 19.76 | 62.1 |
| U | 19.96 | 62.7 |
| U½ | 20.17 | 63.4 |
| V | 20.37 | 64 |
| V½ | 20.57 | 64.6 |
Tips for Finding Your Correct Ring Size
The ideal ring fit is loose enough to slide over your knuckle and tight enough so that it cannot fall off your finger.
- Measure your finger at the end of the day. Your finger size changes depending on the weather and time of day. For best results, measure your finger size at the end of the day when your fingers are warm. (Early in the morning, your fingers are cold and therefore smaller).
- Measure a few times. Be sure to measure your finger size a few times to make sure your calculations are accurate.
- The wider the ring, the tighter it will fit on a finger. Rings with a wider band usually fit more snugly and need to be a bit larger. For anything 5mm or more in width, go a half size up.
- When the knuckle is bigger than the base of the finger. Measure both the base of your finger and your knuckle and pick a size in between the two.
- Your dominant hand is usually larger.Therefore, measure the specific finger on which you are planning to wear the ring.
