| Japan (号) | EU | UK | US |
|---|---|---|---|
| 1 | 41 | C | 1 |
| 2 | 42 | D | 2 |
| 3 | 43 | E | 2½ |
| 4 | 44 | F | 3 |
| 5 | 45 | G | 3½ |
| 6 | 46 | G–H | 3½–4 |
| 7 | 47 | H–I | 4 |
| 8 | 48 | I–J | 4¼ |
| 9 | 49 | J | 4¾ |
| 10 | 50 | K | 5¼ |
| 11 | 51 | L | 5¾ |
| 12 | 52 | L–M | 6¼ |
| 13 | 53 | M–N | 6½ |
| 14 | 54 | N–O | 7 |
| 15 | 55 | O–P | 7¼ |
| 16 | 56 | P | 7½ |
| 17 | 57 | Q | 8 |
| 18 | 58 | R | 8½ |
| 19 | 59 | S | 9 |
| 20 | 60 | T | 9½ |
| 21 | 61 | T–U | 9¾ |
| 22 | 62 | U | 10 |
| 23 | 63 | V | 10½ |
| 24 | 64 | W | 11 |
| 25 | 65 | X | 11½ |
| 26 | 66 | Y | 12 |
| 27 | 67 | Z | 13 |