| Ring Size | Inner Diameter (mm) | Inner Circumference (mm) |
|---|---|---|
| 8 | 17.93 | 56.3 |
| 9 | 18.75 | 58.9 |
| 10 | 19.56 | 61.4 |
| 11 | 20.37 | 64 |
| 12 | 21.18 | 66.6 |
| 13 | 21.79 | 68.5 |
The “Ring Size” column represents the size of the ring.
The “Inside Diameter (mm)” column represents the diameter of the ring measured from the inside.
The “Inside Circumference (mm)” column represents the circumference of the ring, also measured from the inside.