The easiest way is to determine your ring size by measuring a properly matched ring. You can do this by measuring the inner diameter of the ring with a ruler. Note: A wide ring feels somewhat tighter, so make sure you measure a ring that corresponds to the width of the ring you want to order.
| Ring sizes | Diameter (mm) |
| 50 | 16 |
| 51 | 16,25 |
| 52 | 16,5 |
| 53 | 17 |
| 54 | 17,25 |
| 55 | 17,5 |
| 56 | 18 |
| 57 | 18,25 |
| 58 | 18,5 |
| 59 | 19 |
| 60 | 19,25 |
| 61 | 19,5 |
| 62 | 19,75 |
| 63 | 20 |
| 64 | 20,25 |