International Ring Chart

How to determine your ring size
  1. Wrap a piece of string or a strip of paper around your finger.
  2. Mark the point where the two ends meet.
  3. Measure the string or paper against a ruler to get the circumference of your finger.
  4. Divide that by 3.14 to get the diameter of your finger.
  5. Look up your ring size using the form above.

Diameter (mm)

U.S.A. size

Australian size

Italian size

French size

15.27

4 1/2

I 1/2

8

--

15.70

5

J 1/2

9.5

--

16.10

5 1/2

L

10.5

51 3/4

16.51

6

M

11.5

52 3/4

16.92

6 1/2

N

13

54

17.35

7

O

14.5

55 1/4

17.75

7 1/2

P

16

56 1/2

18.19

8

Q

17

57 3/4

18.53

8 1/2

Q 1/2

18.5

58

18.89

9

R 1/2

19.5

59 1/4

19.41

9 1/2

S 1/2

21

60 1/2

19.84

10

T 1/2

22

61 3/4

20.20

10 1/2

U 1/2

23.5

62 3/4

20.68

11

V 1/2

25

64 1/4

21.08

11 1/2

W 1/2

26.5

66

21.49

12

Y

27.5

67 1/2

21.89

12 1/2

Z

28.5

68 3/4

22.33

13

--

30

--



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