International Ring Size Chart

European

Diameter (mm)

England

Japan

Swiss

USA and Canada

 

12.37

b

 

 

1

41 3/4

13.25

d

2

1 3/4

2

43

13.75

e

3

3

2 1/2

44

14.00

f

4

4

3

45 1/2

14.50

g-g-1/2

5-6

5 1/2

3 1/2

47

15.00

h-1/2

7

7

4

48

15.25

i-1/2

8

8

4 1/2

49 1/2

15.75

j 1/2

9

9 1/2

5

50 3/4

16.00

l

10-11

10 3/4

5 1/2

52

16.50

m

12

12

6

53

17.00

n

13

13

6 1/2

54 1/2

17.25

o

14

14 1/2

7

56

17.75

p

15

16

7 1/2

57

18.25

q

16

17

8

58 1/2

18.50

q-1/2-r

17

18 1/2

8 1/2

60

19.00

r-1/2-s

18

20

9

61

19.50

s-1/2-t

19

21

9 1/2

62

20.00

t-1/2

20

22

10

63

20.25

u-1/2

22

23

10 1/2

64 1/2

20.75

v-1/2

23

24 1/2

11

65 1/2

21.00

w-1/2-x

24

26

11 1/2

67 1/2

21.50

y

25

27 1/2

12

68 3/4

21.75

z

26

28 3/4

12 1/2

 

22.00

 

27

 

13