Wrap a string/ribbon around the finger on which you will wear the ring. The twine/tape should only adhere, not tighten.
Make a mark where the upper end meets the lower end.
Measure the twine/tape from the end to the marked point and check the table for the measurement corresponding to the circumference of your finger.
| Measure | Diameter | Circumference | ISO EU |
|---|---|---|---|
| 7 | 14,9 | 46,8 | 47 |
| 8 | 15,3 | 48 | 48 |
| 9 | 15,6 | 49 | 49 |
| 10 | 16 | 50,2 | 50 |
| 11 | 16,2 | 50.9 | 51 |
| 12 | 16,5 | 51,8 | 52 |
| 13 | 16,8 | 52,8 | 53 |
| 14 | 17,2 | 54 | 54 |
| 15 | 17,4 | 54,6 | 55 |
| 16 | 17,8 | 55,9 | 56 |
| 17 | 18,1 | 56,8 | 57 |
| 18 | 18,5 | 58,1 | 58 |
| 19 | 18,8 | 59 | 59 |
| 20 | 19,2 | 60,3 | 60 |
| 21 | 19,5 | 61,2 | 61 |
| 22 | 19,8 | 62,2 | 62 |
| 23 | 20 | 62,8 | 63 |
| 24 | 20,4 | 64,1 | 64 |
| 25 | 20,6 | 64,7 | 65 |
| 26 | 21 | 65,9 | 66 |
| 27 | 21,2 | 67,8 | 67 |
| 28 | 21,5 | 66,6 | 67 |
| 29 | 21,9 | 68,8 | 69 |
| 30 | 22 | 69,7 | 70 |
| 31 | 22,5 | 70,7 | 71 |
| 32 | 22,9 | 71,9 | 72 |
| 33 | 23,3 | 73,2 | 73 |