All rings are US standard size. If you're unsure of your ring size, we recommend buying a ring sizer in order to get the correct size. Alternatively, you can go to a jewelry store and get your fingers measured. Online DIY methods are inaccurate, therefore, we don't recommend relying on them.
| UA Size | US/CA Size | UK/AUS Size | Inside Diameter (mm) | Inside Diameter (inches) |
| 15 | 4 1/2 | I 1/2 | 15.3 | 0.602" |
| 15.5 | 4 3/4 | J | 15.5 | 0.61" |
| 16 | 5 1/2 | K 1/2 | 16.1 | 0.634" |
| 16.5 | 6 | L 1/2 | 16.5 | 0.65" |
| 17 | 7 | N 1/2 | 17.3 | 0.682" |
| 17.5 | 7 1/4 | O | 17.5 | 0.69" |
| 18 | 8 | P 1/2 | 18.1 | 0.714" |
| 18.5 | 8 1/2 | Q 1/2 | 18.5 | 0.73" |
| 19 | 9 1/4 | S | 19.2 | 0.754" |
| 19.5 | 10 | T 1/2 | 19.8 | 0.778" |
| 20 | 10 1/2 | U 1/2 | 20.2 | 0.794" |
| 20.5 | 11 | V 1/2 | 20.6 | 0.81" |
| 21 | 11 1/2 | W 1/2 | 21.0 | 0.826" |
| 21.5 | 12 | X 1/2 | 21.4 | 0.842" |
| 22 | 13 | Z 1/2 | 22.2 | 0.874" |
| 22.5 | 13 1/2 | - | 22.6 | 0.89" |