Sizing Information

International Ring Size Chart


Size mm

Diameter mm

British size

Australian size

French size

German size

Italian size

Swiss size

USA size

Japanese size

48

15.27

I 1/2

I 1/2

15 1/4

8

4.5

8

49

15.7

J 1/2

J 1/2

15 3/4

9.5

5

9

51

16.1

L

L

51 3/4

16

10.5

11 3/4

5 1/2

11

52

16.51

M

M

52 3/4

16 1/2

11.5

12 3/4

6

12

53

16.92

N

N

54

17

13

14

6 1/2

13

55

17.35

O

O

55 1/4

17 1/4

14.5

15 1/4

7

14

56

17.75

P

P

56 1/2

17 3/4

16

16 1/2

7 1/2

15

57

18.19

Q

Q

57 3/4

18

17

17 3/4

8

16

58

18.53

Q 1/2

Q 1/2

58

18 1/2

18.5

8 1/2

17

59

18.89

R 1/2

R 1/2

59 1/4

19

19.5

9

18

61

19.41

S 1/2

S 1/2

60 1/2

19 1/2

21

9 1/2

19

62

19.84

T 1/2

T 1/2

61 3/4

20

22

10

20

63

20.2

U 1/2

U 1/2

62 3/4

20 1/4

23.5

10 1/2

22

65

20.68

V 1/2

V 1/2

64 1/4

20 3/4

25

11

23

66

21.08

W 1/2

W 1/2

66

21

26.5

11 1/2

24

68

21.49

Y

Y

67 1/2

21 1/4

27.5

27 1/2

12

25

69

21.89

Z

Z

68 3/4

21 3/4

28.5

28 3/4

12 1/2

26

70

22.33

22

30

13

27