US to UK Ring Size Conversion Calculator Tool
Convert
Convert US ring sizes to UK sizes quickly and accurately using our free online tool.
Conversion Chart
| US | UK | Diameter (mm) | Circumference (mm) |
|---|---|---|---|
| 3 | F | ||
| 3.5 | G | ||
| 4 | H | ||
| 4.5 | I | ||
| 5 | J | ||
| 5.5 | K | ||
| 6 | L | ||
| 6.5 | M | ||
| 7 | N | ||
| 7.5 | O | ||
| 8 | P | ||
| 8.5 | Q | ||
| 9 | R | ||
| 9.5 | S | ||
| 10 | T | ||
| 10.5 | U | ||
| 11 | V | ||
| 11.5 | W | ||
| 12 | X | ||
| 12.5 | Y | ||
| 13 | Z |