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Ring size guide and conversion chart
Not sure of your ring size?
We design all our rings using USA ring sizing. Read our ring size conversion chart below to help you find your correct size.
How to measure your ring size in mm
- Use a strip of paper and wrap it around your ring finger. Make sure it fits over the knuckle.
- Use a pen to mark where the paper overlaps.
- Measure the length of the paper from start to the pen mark using a ruler with mm measurement.
- Use chart below to find your correct size.
For 100% accurate sizing we do recommend you visit your local jeweller.
RING SIZE CONVERSION CHART
| USA, CAN | IRE, UK, AUS | Inside Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 3 | F | 14.1 | 44.2 |
| 3.5 | G | 14.5 | 45.4 |
| 4 | H | 14.9 | 46.7 |
| 4.5 | I | 15.3 | 48 |
| 5 | J | 15.7 | 49.3 |
| 5.5 | K | 16.1 | 50.6 |
| 6 | L | 16.5 | 51.9 |
| 6.5 | M | 16.9 | 53.2 |
| 7 | N | 17.3 | 54.5 |
| 7.5 | O | 17.7 | 55.8 |
| 8 | P | 18.2 | 57.2 |
| 8.5 | Q | 18.5 | 58.2 |
| 9 | R | 18.9 | 59.3 |
| 9.5 | S | 19.4 | 61 |
| 10 | T | 19.8 | 62.3 |
| 10.5 | U | 20.2 | 63.5 |
| 11 | V | 20.7 | 65 |
| 11.5 | W | 21.1 | 66.2 |
| 12 | X | 21.5 | 67.5 |
| 12.5 | Y | 21.9 | 68.8 |
| 13 | Z | 22.3 | 70.2 |
| 14 | Z + 2 | 22.7 | 71.3 |