Ring size reference chart
| EUR Size | Us Size | UK Size | JP Size | perimeter |
| 41 | 2 | D | 2 | 41mm |
| 44 | 3 | F | 4 | 44mm |
| 45 | 3 1⁄4 | F ½ | 4 ½ | 45mm |
| 46 | 3 3⁄4 | G ½ | 6 | 46mm |
| 47 | 4 | H | 7 | 47mm |
| 48 | 4 ½ | I | 8 | 48mm |
| 49 | 4 3⁄4 | I ½ | 9 | 49mm |
| 50 | 5 1⁄4 | J ½ | 10 | 50mm |
| 51 | 5 ½ | K | 11 | 51mm |
| 52 | 6 | L | 12 | 52mm |
| 53 | 6 ½ | M | 13 | 53mm |
| 54 | 6 3⁄4 | M ½ | 14 | 54mm |
| 55 | 7 1⁄4 | N ½ | 15 | 55mm |
| 56 | 7 ½ | O | 16 | 56mm |
| 57 | 8 | P | 17 | 57mm |
| 58 | 8 1⁄4 | P ½ | 18 | 58mm |
| 59 | 8 3⁄4 | Q ½ | 19 | 59mm |
| 60 | 9 | R | 20 | 60mm |
| 61 | 9 ½ | S | 21 | 61mm |
| 62 | 9 3⁄4 | S ½ | 22 | 62mm |
| 63 | 10 1⁄4 | T ½ | 23 | 63mm |
| 64 | 10 ½ | U | 24 | 64mm |
| 65 | 11 | V | 25 | 65mm |
| 66 | 11 1⁄4 | V ½ | 26 | 66mm |
| 67 | 11 3⁄4 | W ½ | 27 | 67mm |
| 68 | 12 | X | 28 | 68mm |
| 69 | 12 ½ | Y | 29 | 69mm |
| 70 | 13 | Z | 30 | 70mm |
| 71 | 13 1⁄4 | Z ½ | 31 | 71mm |