International Ring Size Chart

United States,  Canada

UK, Europe, Australia

Switzerland

44.2

14.1

3

F

4

4

44.8

14.3

F½

5

5¼

45.5

14.5

3½

G

46.1

14.7

G½

6

6½

46.8

14.9

4

H

7

47.4

15.1

H½

7¾

48.0

15.3

4½

I

8

48.7

15.5

J

9

49.3

15.7

5

J½

9

50.0

15.9

K

10

50.6

16.1

5½

K½

10

51.2

16.3

L

11¾

51.9

16.5

6

L½

11

12¾

52.5

16.7

M

12

53.1

16.9

6½

M½

13

14

53.8

17.1

N

54.4

17.3

7

N½

14

15¼

55.1

17.5

O

55.7

17.7

7½

O½

15

16½

56.3

17.9

P

57.0

18.1

8

P½

16

17¾

57.6

18.3

Q

58.3

18.5

8½

Q½

17

58.9

18.8

R

19

59.5

19.0

9

R½

18

60.2

19.2

S

20¼

60.8

19.4

9½

S½

19

61.4

19.6

T

21½

62.1

19.8

10

T½

20

62.7

20.0

U

21

63.4

20.2

10½

U½

22

22¾

64.0

20.4

V

64.6

20.6

11

V½

23

65.3

20.8

W

25

65.9

21.0

11½

W½

24

66.6

21.2

X

67.2

21.4

12

X½

25

27½

67.8

21.6

Y

68.5

21.8

12½

Z

26

28¾

69.1

22.0

Z½

69.7

22.2

13

27

70.4

22.4

Z+1

71.0

22.6

13½