A well-fitting ring is worth taking a little time over, especially with handmade pieces. If you have any questions about finding your size, please get in touch. I’m always happy to help.
For the most accurate measurement, I’d recommend having your finger measured by a professional jeweller. Many will do this quickly, and often at no charge.
If you’d like to measure at home, my reusable Ring Sizer lets you check your size yourself.
Ring sizes on this website are AU/UK sizes. Where you choose a size, the closest US equivalent is shown alongside it in brackets, e.g. O (US 7), purely for reference. If you’re unsure of your size, or you love a ring that’s listed in a different size, please contact me before ordering.
If you already know your ring size as a number (US/Canada) rather than a letter, or you’d like to double-check against an inside diameter measurement, here’s the full conversion table.
| AU/UK Size | US/Canada Size | Inside Diameter (mm) |
|---|---|---|
| F | 3 | 14.05mm |
| F 1/2 | 3 1/8 | 14.15mm |
| F 3/4 | 3 1/4 | 14.25mm |
| G | 3 3/8 | 14.36mm |
| G 1/4 | 3 1/2 | 14.45mm |
| G 1/2 | 3 5/8 | 14.56mm |
| H | 3 3/4 | 14.65mm |
| H 1/2 | 4 | 14.86mm |
| I | 4 1/4 | 15.04mm |
| I 1/2 | 4 1/2 | 15.27mm |
| J | 4 5/8 | 15.40mm |
| J 1/4 | 4 3/4 | 15.53mm |
| J 1/2 | 5 | 15.70mm |
| K | 5 1/8 | 15.80mm |
| K 1/4 | 5 1/4 | 15.90mm |
| K 1/2 | 5 3/8 | 16.00mm |
| L | 5 1/2 | 16.10mm |
| L 1/4 | 5 3/4 | 16.30mm |
| L 1/2 | 5 7/8 | 16.41mm |
| M | 6 | 16.51mm |
| M 1/2 | 6 1/4 | 16.71mm |
| N | 6 1/2 | 16.92mm |
| N 1/2 | 6 3/4 | 17.13mm |
| O | 7 | 17.35mm |
| O 1/2 | 7 1/4 | 17.45mm |
| P | 7 1/2 | 17.75mm |
| P 1/2 | 7 3/4 | 17.97mm |
| Q | 8 | 18.19mm |
| Q 1/2 | 8 1/4 | 18.35mm |
| Q 3/4 | 8 1/2 | 18.53mm |
| R | 8 5/8 | 18.61mm |
| R 1/4 | 8 3/4 | 18.69mm |
| R 1/2 | 8 7/8 | 18.80mm |
| R 3/4 | 9 | 18.89mm |
| S | 9 1/8 | 19.10mm |
| S 1/4 | 9 1/4 | 19.22mm |
| S 1/2 | 9 3/8 | 19.31mm |
| S 3/4 | 9 1/2 | 19.41mm |
| T | 9 5/8 | 19.51mm |
| T 1/4 | 9 3/4 | 19.62mm |
| T 1/2 | 10 | 19.84mm |
| U | 10 1/4 | 20.02mm |
| U 1/2 | 10 1/2 | 20.20mm |
| V | 10 5/8 | 20.32mm |
| V 1/4 | 10 3/4 | 20.44mm |
| V 1/2 | 11 | 20.68mm |
| W | 11 1/8 | 20.76mm |
| W 1/4 | 11 1/4 | 20.85mm |
| W 1/2 | 11 3/8 | 20.94mm |
| W 3/4 | 11 1/2 | 21.08mm |
| X | 11 5/8 | 21.18mm |
| X 1/4 | 11 3/4 | 21.24mm |
| X 1/2 | 11 7/8 | 21.30mm |
| Y | 12 | 21.49mm |
| Y 1/2 | 12 1/4 | 21.69mm |
| Z | 12 1/2 | 21.89mm |
Some one-of-a-kind rings may be able to be resized, though this may involve an additional cost, and I can let you know what’s possible. You can read more on the Shipping & Returns page.
Please email me at hello@maisonchar.com and I’ll be happy to help.