Use the table below to convert between UK, US and EU ring sizes — accurate to within approximately a quarter of a finger size. For the most reliable result, request a free ring sizer and we’ll post one to you, anywhere in the world.

UK Size	US Size	EU Size
C	1 3/4	40 1/2
D	2 1/4	41 1/2
E	2 3/4	42 3/4
F	3 1/4	44 1/2
G	3 3/4	45 1/2
H	4 1/4	46 1/2
I	4 3/4	47 3/4
J	5 1/4	49 1/2
K	5 1/2	50 1/4
L	6	51 1/2
M	6 1/2	52 1/2
N	7	54
O	7 1/2	55 1/4
P	8	56 1/4
Q	8 1/2	57 1/2
R	8 3/4	58 1/2
S	9 1/2	60 1/4
T	9 3/4	61 1/2
U	10 1/4	62 1/2
V	10 3/4	63 3/4
W	11 1/4	65 1/4
X	11 3/4	66 1/4
Y	12 1/4	67 1/2
Z	12 3/4	68 3/4