International Ring Size Chart

Complete reference guide for converting ring sizes between US, UK, European, Japanese, and Chinese sizing standards.

👩 Women's Ring Sizes

Average range: US 5-7

Most common women's sizes fall between 5 and 7, with size 6 being the most popular.

Average range: US 9-11

Most common men's sizes fall between 9 and 11, with size 10 being the most popular.

US/Canada	UK/Australia	Europe	Japan	China	Diameter (mm)	Circumference (mm)
3	F	44	4	6	14.1	44.2
3.5	G	45	5	7	14.5	45.5
4	H	47	7	8	14.9	46.8
4.5	I	48	8	9	15.3	48
5	J	49	9	10	15.7	49.3
5.5	K	51	11	11	16.1	50.6
6	L	52	12	12	16.5	51.9
6.5	M	53	13	13	16.9	53.1
7	N	54	14	14	17.3	54.4
7.5	O	56	16	15	17.7	55.7
8	P	57	17	16	18.1	57
8.5	Q	58	18	17	18.5	58.3
9	R	59	19	18	19	59.5
9.5	S	60	20	19	19.4	60.8
10	T	62	21	20	19.8	62.1
10.5	U	63	23	21	20.2	63.4
11	V	64	24	22	20.6	64.6
11.5	W	65	25	23	21	65.9
12	X	67	27	24	21.4	67.2
12.5	Y	68	28	25	21.8	68.5
13	Z	69	29	26	22.2	69.7

← Scroll →

Common Women's Sizes (US 5-7)

Common Men's Sizes (US 9-11)

Measure your ring size at the end of the day when your fingers are warm. Fingers can shrink or swell depending on temperature and time of day.

Wider bands (6mm+) typically require a half size larger than narrower bands for the same comfortable fit.

If you're between sizes, consider the ring width and season. For wide bands or warm climates, size up. For thin bands, the smaller size often works.

For expensive jewelry, always get professionally sized at a jeweler. They can measure your exact size and account for knuckle variations.

Use our interactive ring size calculator to find your perfect fit.

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