Women size
| UK | EU | USA |
| 2 1/2 – 3 1/2 | 35-36 | 5-6 |
| 4-5 | 37-38 | 6 1/2 – 7 1/2 |
| 5 1/2 – 6 1/2 | 39-40 | 8-9 |
| 7-8 | 41-42 | 9 1/2 – 10 1/2 |
Men size
| UK | EU | USA |
| 5 1/2 – 7 1/2 | 39-41 | 6 1/2 – 8 1/2 |
| 8-9 | 42-43 | 9-10 |
| 9 1/2 – 10 1/2 | 44-45 | 10 1/2 – 11 1/2 |
| 11- 12 1/2 | 46-48 | 12 – 13 1/2 |
Baby size
| UK | EU |
| 0-1 Month | 50-56 |
| 1-6 Month | 62-68 |
| 6-12 Month | 74-80 |
| 12-18 Month | 80-92 |
Children size
| UK | EU |
| 3 – 5 1/2 | 19-22 |
| 6 – 8 1/2 | 23-26 |
| 9 – 11 1/2 | 27-30 |
| 12 – 12 1/2 | 31-34 |
| 3-5 | 35-38 |
| 5 1/2-8 | 39-42 |
