Size Guide
A French ring size is the circumference of the finger in millimeters. Every NAGOYA ring is made to order in our Saumur workshop, in the size you choose.
How to measure your finger
- Wrap a strip of paper around the base of your finger, without pulling it tight.
- Mark where the paper overlaps and measure the length with a ruler: this is your circumference in millimeters, which is your French size.
- Preferably, measure at the end of the day, when fingers are slightly larger.
Already own a ring that fits? Measure its inner diameter and use the last column.
International size chart
| French size (circumference, mm) | US / Canada | UK / Australia / NZ | Inner diameter (mm) |
|---|---|---|---|
| 44 | 3 | F | 14.0 |
| 45 | 3¼ | G | 14.3 |
| 46 | 3¾ | G½ | 14.6 |
| 47 | 4 | H½ | 15.0 |
| 48 | 4½ | I | 15.3 |
| 49 | 5 | J | 15.6 |
| 50 | 5¼ | K | 15.9 |
| 51 | 5¾ | K½ | 16.2 |
| 52 | 6 | L½ | 16.6 |
| 53 | 6½ | M | 16.9 |
| 54 | 6¾ | N | 17.2 |
| 55 | 7¼ | O | 17.5 |
| 56 | 7½ | O½ | 17.8 |
| 57 | 8 | P½ | 18.1 |
| 58 | 8½ | Q | 18.5 |
| 59 | 8¾ | R | 18.8 |
| 60 | 9¼ | S | 19.1 |
| 61 | 9½ | S½ | 19.4 |
| 62 | 10 | T½ | 19.7 |
| 63 | 10¼ | U | 20.1 |
| 64 | 10¾ | V | 20.4 |
| 65 | 11¼ | W | 20.7 |
| 66 | 11½ | W½ | 21.0 |
| 67 | 12 | X½ | 21.3 |
| 68 | 12¼ | Y | 21.6 |
| 69 | 12¾ | Z | 22.0 |
| 70 | 13 | Z+1 | 22.3 |
These conversions are a guide: the circumference in millimeters is the reference. If you are between two sizes, choose the larger one or write to our workshop.
