Ring Size Guide
Finding the perfect fit is just as important as finding the perfect ring.
At Katie Rose Jewellery, all ring sizes are listed using the standard alphabetical sizing system (e.g. J, K, L½).
How to Measure Your Ring Size
Option 1: Measure a Ring You Already Own
- Choose a ring that fits the intended finger well.
- Measure the inside diameter in millimetres.
- Use the chart below to find your corresponding size.
Option 2: Measure Your Finger
- Wrap a strip of paper or string around the base of your finger.
- Mark where the ends meet and measure the length in millimetres.
- Use the chart below to find your size using the circumference.
Ring Size Conversion Chart
| AU/NZ Size | Inside 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 | 55.7 |
| P | 18.1 | 57.0 |
| Q | 18.5 | 58.3 |
| R | 19.0 | 59.5 |
| S | 19.2 | 60.8 |
| T | 19.8 | 62.1 |
| U | 20.2 | 63.4 |
| V | 20.6 | 64.6 |
| W | 21.0 | 65.9 |
Tip: If you're between sizes, we recommend choosing the larger size for a more comfortable fit.
Need Help?
If you're unsure or buying a gift, I'm always here to help. Reach out for personalised sizing advice or to request a ring sizer by post.