KATZ shoe sizes
 UK |  EU |  USA | Approximate age |
|---|---|---|---|
| 5 | 21-22 | 6 | 18 - 24 month |
| 6 | 23 | 7 | 2 year |
| 7 | 24 | 8 | 2 year |
| 8 | 25-26 | 9 | 3 year |
| 9 | 26-27 | 10 | 4 year |
| 10 | 28 | 11 | 5 year |
| 11 | 29 | 12 | 6 year |
| 12 | 30 | 13 | 7 year |
| 13 | 31-32 | 1 | 8 year |
| 1 | 33 | 2 | 9 year |
| 2 | 34-35 | 3 | 10 year |
| 3 | 36 | 4 | 12 year |
| 4 | 37 | 5 | 13 year |
| 5 | 38 | 6 | 14 year |
| 6 | 39 | 7 | 15 year |