International Conversions for Ring Sizes

International Conversion for Gold Rings and Silver rings sizes.

It is important to know your ring size with majority gemstone rings now sold online.

No need to go to jeweler to check your ring size

Simple way to measure your finger is as follows

Measure your finger size by wrapping string around where finger where the ring will fit.

Mark off where the two pieces meet.

Measure the string against ruler to get circumference of your finger

Divide this figure by 3.14 to get the diameter of your finger

Compare your size to ring chart

Note Our rings are measured in US size

Inside diameter

Inside circumference

Sizes

(in)

(mm)

(in)

(mm)

United States and Canada

United Kingdom, Ireland, and Australia

Japan

Switzerland

0.458

11.63

1.44

36.5

0

0.466

11.84

1.46

37.2

1/4

0.474

12.04

1.49

37.8

1/2

A

0.482

12.24

1.51

38.5

3/4

A 1/2

0.49

12.45

1.54

39.1

1

B

1

0.498

12.65

1.56

39.7

1 1/4

B 1/2

0.506

12.85

1.59

40.4

1 1/2

C

0.514

13.06

1.61

41.0

1 3/4

C 1/2

0.522

13.26

1.64

41.7

2

D

2

1.5

0.53

13.46

1.67

42.3

2 1/4

D 1/2

0.538

13.67

1.69

42.9

2 1/2

E

3

2.75

0.546

13.87

1.72

43.6

2 3/4

E 1/2

0.554

14.07

1.74

44.2

3

F

4

4

0.562

14.27

1.77

44.8

3 1/4

F 1/2

5

5.25

0.57

14.48

1.79

45.5

3 1/2

G

0.578

14.68

1.82

46.1

3 3/4

G 1/2

6

6.5

0.586

14.88

1.84

46.8

4

H

7

0.594

15.09

1.87

47.4

4 1/4

H 1/2

7.75

0.602

15.29

1.89

48.0

4 1/2

I

8

0.61

15.49

1.92

48.7

4 3/4

J

9

0.618

15.70

1.94

49.3

5

J 1/2

9

0.626

15.90

1.97

50.0

5 1/4

K

10

0.634

16.10

1.99

50.6

5 1/2

K 1/2

10

0.642

16.31

2.02

51.2

5 3/4

L

11.75

0.65

16.51

2.04

51.9

6

L 1/2

11

12.75

0.658

16.71

2.07

52.5

6 1/4

M

12

0.666

16.92

2.09

53.1

6 1/2

M 1/2

13

14

0.674

17.12

2.12

53.8

6 3/4

N

0.682

17.32

2.14

54.4

7

N 1/2

14

15.25

0.69

17.53

2.17

55.1

7 1/4

O

0.698

17.73

2.19

55.7

7 1/2

O 1/2

15

16.5

0.706

17.93

2.22

56.3

7 3/4

P

0.714

18.14

2.24

57.0

8

P 1/2

16

17.75

0.722

18.34

2.27

57.6

8 1/4

Q

0.73

18.54

2.29

58.3

8 1/2

Q 1/2

17

0.738

18.75

2.32

58.9

8 3/4

R

19

0.746

18.95

2.34

59.5

9

R 1/2

18

0.754

19.15

2.37

60.2

9 1/4

S

20.25

0.762

19.35

2.39

60.8

9 1/2

S 1/2

19

0.77

19.56

2.42

61.4

9 3/4

T

21.5

0.778

19.76

2.44

62.1

10

T 1/2

20

0.786

19.96

2.47

62.7

10 1/4

U

21

0.794

20.17

2.49

63.4

10 1/2

U 1/2

22

22.75

0.802

20.37

2.52

64.0

10 3/4

V

0.81

20.57

2.54

64.6

11

V 1/2

23

0.818

20.78

2.57

65.3

11 1/4

W

25

0.826

20.98

2.59

65.9

11 1/2

W 1/2

24

0.834

21.18

2.62

66.6

11 3/4

X

0.842

21.39

2.65

67.2

12

X 1/2

25

27.5

0.85

21.59

2.67

67.8

12 1/4

Y

0.858

21.79

2.70

68.5

12 1/2

Z

26

28.75

0.866

22.00

2.72

69.1

12 3/4

Z 1/2

0.874

22.20

2.75

69.7

13

27

0.882

22.40

2.77

70.4

13 1/4

Z1

0.89

22.61

2.80

71.0

13 1/2

0.898

22.81

2.82

71.7

13 3/4

Z2

0.906

23.01

2.85

72.3

14

Z3

0.914

23.22

2.87

72.9

14 1/4

0.922

23.42

2.90

73.6

14 1/2

Z4

0.93

23.62

2.92

74.2

14 3/4

0.938

23.83

2.95

74.8

15

0.946

24.03

2.97

75.5

15 1/4

0.954

24.23

3.00

76.1

15 1/2

0.962

24.43

3.02

76.8

15 3/4

0.97

24.64

3.05

77.4

16

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