Ring Sizing

UK

Euro

USA

Inner
Circumference
(mm)

Groups

Wheatsheaf

Size No.

Size No.

E

3

2 1/2

43

Small &
Childrens

F

4

3

44

G

5

3 1/2

45.5

H

7

4

47

I

8

4 1/2

48

J

9

4 3/4

49

K

10

5 1/4

50

L

11

5 3/4

51

Average
Ladies

M

12

6 1/4

52.5

N

14

6 3/4

54

O

15

7 1/4

55

P

16

7 3/4

56

Q

17

8 1/4

57.5

Ladies
& Mens

R

19

8 3/4

59

S

20

9 1/4

60

T

21

9 3/4

61.5

U

23

10 1/4

63

V

24

10 3/4

64

Large Mens
(and thumbs)

W

25

11 1/4

65

X

26

11 3/4

66.5

Y

28

12 1/4

68

Z

29

12 1/2

69

Z + 1

 

 

 

 

Z + 2