Size guide

Welcome to the International ring size standards where you can determine the size of your finger and ring. The information presented here has been compiled from many sources in various countries to help you determine your ring size compared to those in other countries.

The standards included in this resource are from the US and Canada, the United Kingdom and Australia, France and Russia, Germany, Japan and Switzerland.

Circumference (mm)	Diameter (mm)	U.S. & Canada	UK & Australia	Europe	Spain	China	Singapore & Japan	Hong Kong	Switzerland
44.2	14.1	3	F1/2	44	4	6	4	6	4
44.8	14.3	3	g	Four. Five	5		5		5 1/4
45.5	14.5	3 1/2	G 1/2	Four. Five	5	7		7.5	6 1/2
46.1	14.7	3 1/2	h	46	6		6
46.8	14.9	4	H 1/2	47	7	8	7		9
47.4	15.1	4	Yo	47	7		8		7 3/4
48.0	15.3	4 1/2	I 1/2	48	8		8	10
48.7	15.5	4 1/2	J.	48	8		9		9
49.3	15.7	5	J 1/2	49	9		9	eleven
50.0	15.9	5	K	fifty	10	10	10	12	10
50.6	16.1	5 1/2	K 1/2	fifty	10	eleven	10		12
51.2	16.3	5 1/2	l	51	eleven				11 3/4
51.9	16.5	6	L 1/2	52	12	12		13	12 3/4
52.5	16.7	6	M	52	12	13	12		13
53.1	16.9	6 1/2	M 1/2	53	13		13	14.5	14
53.8	17.1	6 1/2	N	53	13		14	14
54.4	17.3	7	N 1/2	54	14	14		16	15 1/4
55.1	17.5	7	EITHER	55	fifteen		fifteen
55.7	17.7	7 1/2	Or 1/2	55	fifteen		fifteen	17	16 1/2
56.3	17.9	7 1/2	Q	56	16	16			17
57.0	18.1	8	P 1/2	57	17	17		16	17 3/4
57.2	18.2	8	P 1/2	57	17		17		18
57.6	18.3	8 1/2	Q	58	18		18		19
58.3	18.5	8 1/2	Q 1/2	58	18		18		19
58.9	18.8	9	R	59	19		19	18	20.5
59.5	19.0	9	R 1/2	59	19		19	18
60.2	19.2	9 1/2	Yes	60	twenty		twenty		20 1/4
60.8	19.4	9 1/2	S 1/2	60	twenty		twenty		20 1/4
61.4	19.6	9 1/2	T	61	twenty-one		twenty-one		21 1/2
62.1	19.8	10	T 1/2	62	22		22	twenty	23
62.7	20.0	10	OR	62	22		22	twenty-one	23
63.4	20.2	10 1/2	U 1/2	63	23		23	22	22 3/4
64.0	20.4	10 1/2	V	64	24		23		25
64.6	20.6	eleven	V 1/2	64	24		23		25