Ring Size Chart
| Diameter (MM) | Cerenci Size | US | EU | S/M/L |
| 14.0 | 4 | 3 | 44 | XXS |
| 14.4 | 5 | 3½ | 45 | |
| 14.7 | 6 | 3¾ | 46 | |
| 15.0 | 7 | 4 | 47 | XS |
| 15.3 | 8 | 4½ | 48 | |
| 15.6 | 9 | 5 | 49 | |
| 16.1 | 10 | 5½ | 50 | S |
| 16.33 | 11 | 5¾ | 51 | |
| 16.67 | 12 | 6 | 52 | |
| 16.88 | 13 | 6½ | 53 | |
| 17.32 | 14 | 7 | 54 | M |
| 17.63 | 15 | 7¼ | 55 | |
| 17.83 | 16 | 7½ | 56 | |
| 18.17 | 16.5 | 8 | 57 | |
| 18.50 | 17 | 8½ | 58 | L |
| 18.83 | 18 | 8¾ | 59 | |
| 19.17 | 18½ | 9 | 60 | |
| 19.4 | 19 | 9½ | 61 | |
| 19.8 | 20 | 10 | 62 | XL |
| 20.0 | 21 | 10½ | 63 | |
| 20.6 | 22 | 10¾ | 64 |