CASTELLO HANDMADE JEWELRY

RING SIZES CHART

Ring size guide

Findyoursize

Measure the inside circumference or diameter of a ring that fits, enter it below, and we'll match your size across every international standard.

Your measurement (mm)

Measured

Enter a measurement to see your matching size.

Circumference (mm)	Diameter (mm)	Europe	UK & Australia	US & Canada	China	Singapore & Japan	Hong Kong	Switzerland
44.2	14.1	44	F½	3	6	4	6	4
44.8	14.3	45	G			5		5¼
45.5	14.5		G½	3½	7		7.5
46.1	14.7	46	H			6		6½
46.8	14.9	47	H½	4	8	7	9
47.4	15.1		I		9			7¾
48.0	15.3	48	I½	4½		8	10
48.7	15.5		J					9
49.3	15.7	49	J½	5	10	9	11
50.0	15.9	50	K					10
50.6	16.1		K½	5½	11	10	12
51.2	16.3	51	L					11¾
51.9	16.5	52	L½	6	12	11	13	12¾
52.5	16.7		M		13	12
53.1	16.9	53	M½	6½		13	14.5	14
53.8	17.1		N		14
54.4	17.3	54	N½	7		14	16	15¼
55.1	17.5	55	O		15
55.7	17.7		O½	7½		15	17	16½
56.3	17.9	56	P		16
57.0	18.1	57	P½	8	17	16		17¾
57.2	18.2					18
57.6	18.3		Q
58.3	18.5	58	Q½	8½	18	17	19
58.9	18.8	59	R					19
59.5	19.0		R½	9	19	18	20.5
60.2	19.2	60	S		20			20¼
60.8	19.4	61	S½	9½		19	22
61.4	19.6		T		21			21½
62.1	19.8	62	T½	10		20	23
62.7	20.0		U		22	21
63.4	20.2	63	U½	10½		22	24	22¾
64.0	20.4	64	V		23
64.6	20.6		V½	11		23	25
65.3	20.8	65	W		24			25
65.9	21.0	66	W½	11½	25	24	26
66.6	21.2		X
67.2	21.4	67	X½	12	26	25	27.75	27½
67.8	21.6		Y
68.5	21.8	68	Z	12½		26		28¾
69.1	22.0	69	Z½
69.7	22.2	70		13		27	30
70.4	22.4		Z+1
71.0	22.6		Z+2	13½