✶ Size Guides - On

On Running Size Guide - Men

US

UK

EU

Inches

7

40

9.84

7

40½

10.04

8

41

10.24

8

42

10.43

9

42½

10.63

9

43

10.83

10

44

11.02

10½

10

44½

11.22

11

10½

45

11.42

11½

11

46

11.61

12

11½

47

11.81

12½

12

47½

12.01

13

12½

48

12.2

14

13½

49

12.4

On Running Size Guide - Women

US

UK

EU

Inches

5

3

36

8.66

36½

8.86

6

4

37

9.06

37½

9.25

7

5

38

9.45

38½

9.65

8

6

39

9.84

40

10.04

9

7

40½

10.24

41

10.43

10

8

42

10.63

10½

42½

10.83

11

9

43

11.02