Ring Size Guide
Ring Size Guide
Not sure which size to choose? Use this chart to convert between US, UK, and EU ring sizes, or measure an existing ring at home.
How to Measure a Ring You Already Own
- Take a ring that fits the intended finger well.
- Measure the inside diameter in millimeters (mm) using a ruler, placing it edge to edge across the inside of the band.
- Match that measurement to the closest size in the chart below.
Size Conversion Chart
| US Size | UK Size | EU Size | Inside Diameter (mm) |
|---|---|---|---|
| 5 | J 1/2 | 49 | 15.7 |
| 5.5 | K 1/2 | 50 | 16.1 |
| 6 | L 1/2 | 51.5 | 16.5 |
| 6.5 | M 1/2 | 53 | 16.9 |
| 7 | N | 54 | 17.3 |
| 7.5 | O 1/2 | 55.5 | 17.7 |
| 8 | P 1/2 | 57 | 18.1 |
| 8.5 | Q 1/2 | 58 | 18.5 |
| 9 | R 1/2 | 59.5 | 18.9 |
| 9.5 | S 1/2 | 61 | 19.4 |
Between Sizes?
If your measurement falls between two sizes, we recommend sizing up for the most comfortable fit — rings can always be resized down more easily than up.
Need Help?
If you're still unsure, contact us at info@diyes.co and we'll help you find your perfect fit.