We request you to ensure that you select the right size to avoid any inconvenience.
It is recommended to go to a physical jewelry store to find your perfect ring size with metal ring size.

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Ring Diameter (MM)	US	United Kingdom	France	Germany	Japan	Switzerland
14.0 mm.	3	F	44	14	4	4
14.4 mm.	3.5	G	45¼	14½	5½	6⅓
14.8 mm.	4	H½	46½	15	7	6½
15.2 mm.	4.5	I½	47¾	15¼	8	8
15.6 mm.	5	J½	49	15¾	9	9½
16.0 mm.	5.5	L	50¾	16	10½	10¾
16.5 mm.	6	M	51½	16½	12	12¾
16.9 mm.	6.5	N	52¾	17	13	14
17.3 mm.	7	O	54	17¼	14	15¼
17.7 mm.	7.5	P	55¼	17¾	15	16½
18.2 mm.	8	Q	56¾	18	16	17¾
18.6 mm.	8.5	Q½	58	18½	17	18½
19.0 mm.	9	R½	59¼	19	18	20
19.4 mm.	9.5	S½	60¾	19½	19	21
19.8 mm.	10	T½	61¾	20	20	21¾
20.2 mm.	10.5	U½	62¾	20¼	22	22¾
20.6 mm.	11	V½	64¼	20¾	23	24
21.0 mm.	11.5	W½	66	21	24	25¾
21.4 mm.	12	Y	67¼	21¼	25	27½
21.8 mm.	12.5	Z	68	21¾	26	28¾
22.2 mm.	13	Z + 1	69	22	27	29¼
22.6 mm.	13.5	Z + 1.5	71	22.6	-	31