Ring Size Chart - Product Page

International Ring Size Chart 

Internal Diameter (mm)	Perimeter Length (mm)	USA size	Asian Size
15.2	48	4	8
15.5	49	4	9
15.8	50	5	10
16.2	51	5	11
16.5	52	5.5	12
16.9	53	6	13
17.2	54	6	14
17.5	55	7	15
17.8	56	7	16
18.1	57	8	17
18.4	58	8	18
18.7	59	8.5	19
19.1	60	9	20
19.4	61	9.5	21
19.8	62	10	22
20.1	63	10	23
20.4	64	11	24
20.7	65	11	25
21.1	66	11.5	26
21.4	67	12	27
21.7	68	12.5	28

Having trouble figuring out your ring size? Head on over to our Size Chart.