RING
DIAMETER
FINGER
CIRCUMFERENCE
RING SIZE
(mm) (mm) UK US EU
14.8 46.5 H 3 3/4 46 1/2
15.2 47.8 I 4 1/8 47 1/2
15.6 49.0 J 4 5/8 48 1/2
16.0 50.3 K 5 1/4 50
16.4 51.5 L 5 1/2 51
16.8 52.8 M 6 52 1/2
17.2 54.0 N 6 1/2 53 1/2
17.4 54.7 O 7 55
18.0 56.6 P 7 1/2 56
18.4 57.8 Q 8 57 1/2
18.0 59.1 R 8 5/8 59

 

If you are not sure of your size, please click the link below for a printable ring sizer to find your size of any finger you'd like!

 Size Guide