Ring Sizer

If you are not certain of your ring measurement; place a string or cord round the finger then measure it and convert to diameter from the length of the cord.  To remove a ring safely and easily, relax the finger and then gently ease over the knuckle; if still resistant, use a little liquid soap and twist gently at the same time as easing over the knuckle

UK size

Diameter mm

Circumference mm

US size

A

11.5

36.25

0.5

B

12.3

38.64

1

C

12.7

39.9

1.5

D

13.1

41.15

2

E

13.5

42.41

2.5

F

13.9

43.67

3

G

14.3

44.92

3.25

H

14.7

46.18

3.75

I

15.1

47.44

4.25

J

15.5

48.69

4.75

K

15.9

49.95

5.25

L

16.3

51.24

5.75

M

16.7

52.46

6.25

N

17.1

53.72

6.75

O

17.5

54.98

7

P

17.9

56.23

7.5

Q

18.3

57.49

8

R

18.7

58.75

8.5

S

19.1

60

9

T

19.5

61.26

9.5

U

19.9

62.52

10

V

20.3

63.77

10.5

W

20.7

65

11

X

21.1

66.29

11.5

Y

21.5

67.51

12

Z

21.9

68.77

12.5

Z+1

22.3

69.99