Find your ring size
Measure the inside diameter of a ring you own and compare this measurement to the chart below to find your ring size.
Ring size chart
| SA/UK Size | Inside Diameter (mm) | US Size | Inside Diameter (inches) |
| I | 15.3mm | 4.5 | 0.60in |
| J | 15.5mm | 4.75 | 0.61in |
| K | 15.9mm | 5.25 | 0.62in |
| L | 16.3mm | 5.75 | 0.64in |
| M | 16.7mm | 6.25 | 0.65in |
| N | 17.1mm | 6.75 | 0.67in |
| O | 17.5mm | 7.25 | 0.68in |
| P | 17.9mm | 7.75 | 0.70in |
| Q | 18.3mm | 8.25 | 0.72in |
| R | 18.7mm | 8.75 | 0.73in |
| S | 19.2mm | 9.25 | 0.75in |
| T | 19.6mm | 9.75 | 0.77in |
| U | 20mm | 10.25 | 0.78in |