Choosing the right ring size

It’s important to have a ring that fits and to help you choose the right one, we’ve created the below table which shows the circumference of each ring size in mm.

UK Ring Size	US Size	EU Size	Circumference (mm)	Diameter
H	4	47	46.8mm	14.7mm
I	4 ½	48	48mm	15.2mm
J	5	49	48.7mm	15.6mm
K	5 ½	50	50mm	16.0mm
L	6	51	51.2mm	16.4mm
M	6 ½	52	52.5mm	16.8mm
N	7	53	53.8mm	17.2mm
O	7 ½	54	55.1mm	17.6mm
P	8	55	56.3mm	18.0mm
Q	8 ½	56	57.6mm	18.4mm
R	9	57	58.9mm	18.8mm
S	9 ½	58	60.2mm	19.2mm
T	10	59	61.4mm	19.6mm
U	10 ½	60	62.7mm	20.0mm