Ring Sizer - UK/US Conversion Table

It's always best to have your fingers measured professionally, but it's not an exact science.  The following chart should help you work out your UK ring size for each finger. (UK ring sizing differs from many other countries in the world.)

Do remember, our fingers change in size from morning to evening, month to month and even Winter to Summer!  The following chart is helpful to see how the sizes are compiled.

To Find your Size: Wrap a strip of paper or a piece of string around your finger and mark where the two ends meet, then use a ruler to measure the string or paper in mm (1cm=10mm, then simply check against our chart below.

UK Size

     Metric-mm (1cm=10mm)   

    US Size    

A

-

0.5

B

-

1.0

C

-

1.5

D

42mm

2.0

E

43mm

2.5

F

44mm

3.0

G

45mm

3.5

H

46mm

4.0

I

48mm

4.5

J

49mm

5.0

K

50mm

5.5

L

52mm

6.0

M

53mm

6.5

N

54mm

7.0

O

55mm

7.5

P

57mm

8.0

Q

58mm

8.5

R

59mm

9.0

S

61mm

10.0

T

62mm

15.5

U

63mm

11.0

V

64mm

11.5

W

66mm

12.0

X

67mm

12.5

Y

68mm

13.0

Z

70mm

13.5

 

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