UK Ring Size Chart

UK Size US Size Inside Diameter (mm) Inside Circumference (mm)
J 5 15.6 49
K 5.5 16 50.3
L 6 16.4 51.5
M 6.5 16.8 52.8
N 7 17.2 54
O 7.5 17.6 55.3
P 8 18 56.6
Q 8.5 18.4 57.8
R 9 18.8 59.1
S 9.5 19.2 60.3
T 10 19.6 61.6
U 10.5 20 62.8
V 11 20.4 64.1
W 11.5 20.8 65.3
X 12 21.2 66.6
Y 12.5 21.6 67.9
Z 13 22 69.1

UK Ring Size Guide