Ring Size Chart

Inside Circumference

Inside Diameter

US Ring Size

IN

MM

MM

1.74

44.2

14.1

3

1.77

44.8

14.3

3.25

1.79

45.5

14.5

3.5

1.82

46.1

14.7

3.75

1.84

46.8

14.9

4

1.87

47.4

15.1

4.25

1.89

48

15.3

4.5

1.92

48.7

15.5

4.75

1.94

49.3

15.7

5

1.97

50

15.9

5.25

1.99

50.6

16.1

5.5

2.02

51.2

16.3

5.75

2.04

51.9

16.5

6

2.07

52.5

16.7

6.25

2.09

53.1

16.9

6.5

2.12

53.8

17.1

6.75

2.14

54.4

17.3

7

2.17

55.1

17.5

7.25

2.19

55.7

17.7

7.5

2.22

56.3

17.9

7.75

2.24

57

18.1

8

2.27

57.6

18.25

8.25

2.29

58.3

18.5

8.5

2.32

58.9

18.75

8.75

2.34

59.5

18.9

9

2.37

60.2

19.2

9.25

2.39

60.8

19.4

9.5

2.42

61.4

19.6

9.75

2.44

62.1

19.8

10

2.47

62.7

20

10.25

2.49

63.4

20.2

10.5

2.52

64

20.4

10.75

2.54

64.6

20.6

11

2.57

65.3

20.8

11.25

2.59

65.9

21

11.5

2.62

66.6

21.2

11.75

2.65

67.2

21.4

12

2.68

68.1

21.6

12.25

2.71

68.5

21.8

12.5

2.72

69.1

22

12.75

2.75

69.7

22.2

13