Ring Size Guide

Inside Diameter (MM)	Inside Circumference (MM)	UK Ireland Australia New Zealand	USA Canada Mexico	Italy Spain Switzerland	France Russia	China Japan South America
14.07	44.2	F	3	4.25	44	4
14.27	44.8	F 1/2	3.25	4.75	45	5
14.48	45.5	G	3.5	5.5	46
14.68	46.1	G 1/2	3.75	6	46	6
14.88	46.8	H	4	6.75	47	7
15.09	47.4	H 1/2	4.25	7.5	47
15.29	48	I	4.5	8	48	8
15.49	48.7	J	4.75	8.75	49
15.7	49.3	J 1/2	5	9.25	49	9
15.9	50	K	5.25	10	50
16.1	50.6	K 1/2	5.5	10.5	51	10
16.31	51.2	L	5.75	11.25	51
16.51	51.9	L 1/2	6	11.75	52	11
16.71	52.5	M	6.25	12.5	53	12
16.92	53.1	M 1/2	6.5	13.25	53	13
17.12	53.8	N	6.75	13.75	54
17.32	54.4	N 1/2	7	14.5	54	14
17.53	55.1	O	7.25	15	55
17.73	55.7	O 1/2	7.5	15.75	56	15
17.93	56.3	P	7.75	16.25	56
18.14	57	P 1/2	8	17	57	16
18.34	57.6	Q	8.25	17.5	58
18.54	58.3	Q 1/2	8.5	18.25	58	17
18.75	58.9	R	8.75	19	59
18.95	59.5	R 1/2	9	19.5	60	18
19.15	60.2	S	9.25	20.25	60
19.35	60.8	S 1/2	9.5	20.75	61	19
19.56	61.4	T	9.75	21.5	61
19.76	62.1	T 1/2	10	22	62	20
19.96	62.7	U	10.25	22.75	63	21
20.17	63.4	U 1/2	10.5	23.25	63	22
20.37	64	V	10.75	24	64
20.57	64.6	V 1/2	11	24.74	65	23
20.78	65.3	W	11.25	25.25	65
20.98	65.9	W 1/2	11.5	26	66	24
21.18	66.6	X	11.75	26.5	67
21.39	67.2	X 1/2	12	27.25	67	25
21.59	67.8	Y	12.25	27.75	68
21.79	68.5	Z	12.5	28.5	69	26
22	69.1	Z 1/2	12.75	29	69
22.2	69.7		13	29.75	70	27

Ring - Size Guide