KONE Size Conversion Chart
| AGE | Foot Length | |||
| U.S.A. | EU | Girls | Boy | Centimeters |
| 1 | 16 | 4m | 4 m | 8.46 |
| 2 | 17 | 6 m | 6 m | 9.30 |
| 2 1/2 | 18 | 8 m | 8 m | 10.16 |
| 3 1/2 | 19 | 10 m | 10 m | 11.00 |
| 4 | 20 | 1 | 1 | 11.84 |
| 5 | 21 | 1 1/2-2 | 1 1/2-2 | 12.70 |
| 5 1/2 | 22 | 2 | 2-3 | 13.54 |
| 6 1/2 | 23 | 2-3 | 3 | 14.38 |
| 7 1/2 | 24 | 3-4 | 3-4 | 15.24 |
| 8 | 25 | 4 | 4 | 16.08 |
| 9 | 26 | 4 | 4-5 | 16.51 |
| 9 1/2 | 27 | 5-6 | 5-6 | 16.92 |
| 10 1/2 | 28 | 6 | 6 | 17.78 |
| 11 | 29 | 6-7 | 6-7 | 18.19 |
| 12 | 30 | 6-7 | 7-8 | 18.62 |
| 13 | 31 | 7 | 8 | 19.46 |
| 13 1/2 | 32 | 7-8 | 8-9 | 20.32 |
| 1 1/2 | 33 | 8 | 9 | 21.16 |
| 2 | 34 | 8-9 | 9-10 | 22.00 |
| 3 | 35 | 9-10 | 10 | 22.86 |