| US / Canada Ring Size | Inside Diameter (Inches) | Inside Diameter (mm) |
|---|---|---|
| 5 | 0.62" | 15.7mm |
| 6 | 0.65" | 16.6mm |
| 7 | 0.68" | 17.2mm |
| 8 | 0.71" | 18.1mm |
| 9 | 0.75" | 19.1mm |
| 10 | 0.78" | 19.7mm |
| 11 | 0.81" | 20.6mm |
| 12 | 0.84" | 21.3mm |
| US / Canada Ring Size | Inside Diameter (Inches) | Inside Diameter (mm) |
|---|---|---|
| 5 | 0.62" | 15.7mm |
| 6 | 0.65" | 16.6mm |
| 7 | 0.68" | 17.2mm |
| 8 | 0.71" | 18.1mm |
| 9 | 0.75" | 19.1mm |
| 10 | 0.78" | 19.7mm |
| 11 | 0.81" | 20.6mm |
| 12 | 0.84" | 21.3mm |