Ring Sizing
|
US |
UK/AU |
Diameter |
Circumference |
| 5 | K | 15.7mm | 49.3mm |
| 5.5 | L | 16.1mm | 50.6mm |
| 6 | M | 16.5mm | 51.8mm |
| 6.5 | N | 16.9mm | 53.1mm |
| 7 | O | 17.4mm | 54.7mm |
| 7.5 | P | 17.7mm | 55.6mm |
| 8 | Q | 18.2mm | 57.2mm |
| 8.5 | R | 18.5mm | 58.1mm |
| 9 | S | 19mm | 59.7mm |
| 9.5 | T | 19.4mm | 60.9mm |
| 10 | U | 19.9mm | 62.5mm |
| 10.5 | V | 20.2mm | 63.5mm |
| 11 | W | 20.7mm | 65mm |
| 11.5 | X | 21mm | 66mm |
| 12 | Y | 21.5mm | 67.5mm |
| 12.5 | Z | 21.8mm | 68.5mm |