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International Ring Size Conversion Table

U.S. & Canada

Italy  

 France 

 Germany 

 Japan 

 Switzerland 

Great Britain

3-1/2

6-1/2

-

14-1/2

-

-

-

3-3/4

7

46-1/2

-

6-1/2

6-1/2

H

4

7-1/2

-

15

7

-

H-1/2

4-1/4

 

47-3/4

-

-

7-3/4

I

4-1/2

9

-

15-1/4

8

-

I-1/2

4-3/4

 

49

-

-

9

J

5

10

-

15-3/4

9

-

J-1/2

5-1/4

 

50

-

-

10

K

5-1/2

11

51-3/4

16

-

11-3/4

L

5-3/4

 

-

-

11

-

L-1/2

6

12-1/2

52-3/4

16-1/2

12

12-3/4

M

6-1/2

13-1/2

54

17

13

14

N

7

15

55-1/4

17-1/4

14

15-1/4

O

7-1/2

16

56-1/2

17-3/4

15

16-1/2

P

8

17-1/2

57-3/4

18

16

17-3/4

Q

8-1/2

19

-

18-1/2

17

-

-

8-3/4

 

59

-

-

19

R

9

20

-

19

18

-

-

9-1/4

 

60-1/4

-

-

20-1/4

S

9-1/2

21

-

19-1/2

19

-

-

9-3/4

 

61-1/2

-

-

21-1/2

T

10

22-1/2

-

20

20

...

T-1/2

10-1/4

 

62-3/4

-

21

22-3/4

U

10-1/2

23-1/2

-

20-1/4

22

-

U-1/2

10-3/4

 

63-3/4

-

-

23-3/4

V

11

25

-

20-3/4

23

-

V-1/2

11-1/4

 

65

-

-

25

W

11-1/2

26

-

21

24

-

-

11-3/4

 

66-1/4

-

-

26-1/4

X

12

27-1/2

67-1/2

21-1/4

25

27-1/2

Y

12-1/2

28-1/2

68-3/4

21-3/4

26

28-3/4

Z

13

30

-

22

27

-

-