This is Nike Japan shoe size chart for infants small kids which you can use to convert Japan to US, UK, and European shoe size system.
| Foot length (inch) | Japan | US | UK | EU |
|---|---|---|---|---|
| 3 3/16 | 6cm | 0C | 0 | 15 |
| 3 9/16 | 7cm | 1C | 0.5 | 16 |
| 3 12/16 | 7.5cm | 1.5C | 1 | 16.5 |
| 3 15/16 | 8cm | 2C | 1.5 | 17 |
| 4 1/16 | 8.5cm | 2.5C | 2 | 18 |
| 4 4/16 | 9cm | 3C | 2.5 | 18.5 |
| 4 7/16 | 9.5cm | 3.5C | 3 | 19 |
| 4 9/16 | 10cm | 4C | 3.5 | 19.5 |
