Age

US

EU

AU

UK

Inner sole length (inches)

1.5

5

20

5

4

5.39

2

6

21

6

4.5

5.67

2 - 3

7

22

7

5

5.94

2 - 3

8

23

8

6

6.18

3

9

24

9

7

6.46

3.5

10

25

10

8

6.69

4.5

11

27

11

10

7.17

5

12

28

12

11

7.48

5.5

13

29

13

12

7.83

6 - 7

1

31

1

13

8.15

8 - 9 2 32 2 1 8.50
10 - 11 3 33 3 2 8.82
12 - 13 4 34 4 3 9.17