Ring Size Converter: US to UK
US Size 6 = UK Size M (Diameter: 16.5 mm / 0.65 inches)
Common women's size is US 6/7. Common men's size is US 9/10.
Select Size
Equivalents
UK / Australia Size J 1/2
Inside Diameter 15.7 mm (0.62 inches)
Ring Size Conversion Matrix
| US / Canada Size | UK / Australia Size | Inside Diameter (mm) | Inside Diameter (in) |
|---|---|---|---|
| US 5.0 | UK J 1/2 | 15.7 mm | 0.62" |
| US 5.5 | UK L | 16.1 mm | 0.63" |
| US 6.0 | UK M | 16.5 mm | 0.65" |
| US 6.5 | UK N | 16.9 mm | 0.67" |
| US 7.0 | UK O | 17.3 mm | 0.68" |
| US 7.5 | UK P | 17.7 mm | 0.70" |
| US 8.0 | UK Q | 18.1 mm | 0.71" |
| US 8.5 | UK R | 18.5 mm | 0.73" |
| US 9.0 | UK S | 18.9 mm | 0.74" |
| US 9.5 | UK T | 19.4 mm | 0.76" |
| US 10.0 | UK U | 19.8 mm | 0.78" |
| US 11.0 | UK W | 20.6 mm | 0.81" |