Choosing the right size ensures your ring is comfortable and secure. On each ring's page, the size is indicated along with the inner diameter in millimeters, for example 7 (17.3 mm).
How to measure
Method 1 – With a ring you already own
- Choose a ring that fits you well on the desired finger.
- Using a ruler, measure the inner diameter of the ring, from one edge to the other, in millimeters.
- Consult the table below and choose the size with the closest diameter.
Method 2 – With a strip of paper or string
- Wrap a strip of paper or a piece of string around the base of your finger, without tightening it.
- Mark the point where the strip overlaps.
- Measure the length with a ruler, in millimeters. This value corresponds to the circumference of your finger.
- Consult the table below and choose the size with the closest circumference.
Size chart
| Size | Inner diameter | Circumference |
|---|---|---|
| 5 | 15.7 mm | 49.3 mm |
| 6 | 16.5 mm | 51.9 mm |
| 7 | 17.3 mm | 54.4 mm |
| 8 | 18.2 mm | 57.0 mm |
| 9 | 18.9 mm | 59.5 mm |
| 10 | 19.8 mm | 62.1 mm |
| 11 | 20.6 mm | 64.6 mm |
| 12 | 21.4 mm | 67.2 mm |
| 13 | 22.2 mm | 69.7 mm |
Recommendations
- Measure at the end of the day, when your fingers are slightly more swollen.
- Avoid measuring with cold hands, as fingers tend to be thinner.
- If your measurement falls between two sizes, choose the larger one.
- Wide rings fit tighter than thin rings; in that case, consider going up one size.
- Adjustable models fit various sizes and are a good option if you are in doubt.
Do you have questions about the size? Contact us at bp21atelier@gmail.com and we will be happy to help.