Size Guide
Download our printable ring sizing guide to measure yourself or determine a friends ring size.
Our sizing is the Australian Standard with letters. This is measured by the inside diameter of the ring.
How To Measure
Method 01
String or paper
Wrap a thin strip of paper around your finger. Mark where it overlaps, then measure the length in mm. Find your circumference in the chart below.
Method 02
Existing ring
Place a ring flat on a ruler. Measure the inside diameter in mm across the centre. Find that measurement below.
Method 03
Visit a jeweller
Any local jeweller can measure your finger with a ring sizer in under a minute. Ask for your Australian (UK letter) size.
Size Conversion Chart
If you need to convert your size from Australian (AU, UK & NZ) sizing to American/Canadian size, use the chart below.
| Sue (AU & UK, NZ)AU/UK | US & CanadaUS | Circumference (mm)Circ. (mm) | Inside Diameter (mm)Diam. (mm) |
| H | 4 | 46.80 | 14.88 |
| H½ | 4.25 | 47.40 | 15.09 |
| I | 4.5 | 48.00 | 15.29 |
| J | 4.75 | 48.70 | 15.49 |
| J½ | 5 | 49.30 | 15.70 |
| K | 5.25 | 50.00 | 15.90 |
| K½ | 5.5 | 50.60 | 16.10 |
| L | 5.75 | 51.20 | 16.31 |
| L½ | 6 | 51.90 | 16.51 |
| M | 6.25 | 52.50 | 16.71 |
| M½ | 6.5 | 53.10 | 16.92 |
| N | 6.75 | 53.80 | 17.12 |
| N½ | 7 | 54.40 | 17.32 |
| O | 7.25 | 55.10 | 17.53 |
| O½ | 7.5 | 55.70 | 17.73 |
| P | 7.75 | 56.30 | 17.93 |
| P½ | 8 | 57.00 | 18.14 |
| Q | 8.25 | 57.60 | 18.34 |
| Q½ | 8.5 | 58.30 | 18.54 |
| R | 8.75 | 58.90 | 18.75 |
| R½ | 9 | 59.50 | 18.95 |
| S | 9.25 | 60.20 | 19.15 |
| S½ | 9.5 | 60.80 | 19.35 |
| T | 9.75 | 61.40 | 19.56 |
| T½ | 10 | 62.10 | 19.76 |
| U | 10.25 | 62.70 | 19.96 |
| U½ | 10.5 | 63.40 | 20.17 |
| V | 10.75 | 64.00 | 20.37 |
| V½ | 11 | 64.60 | 20.57 |
| W | 11.25 | 65.30 | 20.78 |
| W½ | 11.5 | 65.90 | 20.93 |
| X | 11.75 | 66.60 | 21.18 |
| X½ | 12 | 67.20 | 21.39 |
| Y | 12.25 | 67.80 | 21.59 |
| Y½ | 12.5 | 68.50 | 21.79 |
| Z | 12.75 | 69.10 | 22.00 |
| Z½ | 13 | 69.70 | 22.20 |
| Z1 | 13.25 | 70.40 | 22.40 |
| — | 13.5 | 71.00 | 22.61 |
| Z2 | 13.75 | 71.70 | 22.81 |
| Z3 | 14 | 72.30 | 23.01 |
| — | 14.25 | 72.90 | 23.22 |
| Z4 | 14.5 | 73.60 | 23.42 |
No matching size found. Try a different value.