Ring Sizing Chart

If you're not sure what your ring size is, here are two suggestions how to find out, by referring to the chart below.
1. You can measure the circumference of your finger(s) using a tape measure, piece of string or even dental floss.
2. Or if you have a ring that fits, measure its inside diameter.   
 
UK Ring Size Inside Circumference Inside Diameter
mm mm
A 37.8 12.04
B 39.1 12.45
C 40.4 12.85
D 41.7 13.26
E 42.9 13.67
F 44.2 14.07
G 45.5 14.48
H 46.8 14.88
I 48 15.29
J 48.7 15.49
K 50 15.9
L 51.2 16.31
M 52.5 16.71
N 53.8 17.12
O 55.1 17.53
P 56.3 17.93
Q 57.6 18.34
R 58.9 18.75
S 60.2 19.15
T 61.4 19.56
U 62.7 19.96
V 64 20.37
W 65.3 20.78
X 66.6 21.18
Y 67.8 21.59
Z 68.5 21.79