Women’s ring size guide

Most women wear a US 6–6½ — also the most common engagement ring size. Convert to any system below.

I know my size in Value

Your size is US 6 (UK L½, EU 52).

Fit confidence Exact table match

Measurement confidence 70/100 · Medium Standard chart conversion; final fit still depends on band width and knuckle shape. Confirm with a printable or physical sizer before ordering an expensive ring.

US: 6
UK: L½
EU / ISO: 52
Japan: 12
CH / IT / ES: 12
Ø mm: 16.51
Circ mm: 51.9

Open US 6 size guide

Print Smart rings Wallet Physical sizer Local only; no account.

US	UK	EU	JP	CH	Ø mm	Circ mm
3	F½	44	4	4	14.07	44.2
3.5	G½	45	5	5	14.48	45.5
4	H½	47	7	7	14.88	46.8
4.5	I½	48	8	8	15.29	48.0
5	J½	49	9	9	15.70	49.3
5.5	K½	51	10	11	16.10	50.6
6	L½	52	12	12	16.51	51.9
6.5	M½	53	13	13	16.92	53.1
7	N½	54	14	14	17.32	54.4
7.5	O½	56	15	16	17.73	55.7
8	P½	57	16	17	18.14	57.0
8.5	Q½	58	17	18	18.54	58.3
9	R½	60	18	20	18.95	59.5
9.5	S½	61	19	21	19.35	60.8
10	T½	62	20	22	19.76	62.1
10.5	U½	63	22	23	20.17	63.4
11	V½	65	23	25	20.57	64.6
11.5	W½	66	24	26	20.98	65.9
12	Y	67	25	27	21.39	67.2
12.5	Z	68	26	28	21.79	68.5
13	Z½	70	27	30	22.20	69.7

Average and common women’s sizes

Average: US 6–6½ (UK L–M½, EU 52–53).
Most women: US 5–7 (≈15.7–17.3 mm diameter).
Surprise proposal? See how to find her size without asking.

Measure with the at-home guide or the on-screen sizer, or read the average ring size data.

Frequently asked questions

What is the average women’s ring size?

The most common women’s ring size is US 6 to 6½ (UK L–M½, EU 52–53, about 16.5–17 mm diameter). Sizes 5 to 7 fit most women.

What is the most common engagement ring size?

US 6 to 6½ is the most requested engagement ring size. If you’re unsure and it’s a surprise, choose a resizable style near US 6.

What size is a size 6 women’s ring in mm?

US 6 is 16.5 mm inner diameter (51.9 mm circumference), UK L½, EU 52.