What is a UK 12 in US dress sizes?

A UK 12 is a US 8 and an EU 40, with a bust of roughly 92 cm.

Why are Italian dress sizes higher?

Italian sizing adds about four numbers to the EU scale, so an EU 40 is labelled IT 44.

How do I convert a dress size to a measurement?

Use the bust column: it is the most reliable anchor for fitted dresses, followed by waist for belted styles.

Converters

Dress Size Converter

Dress sizes are the least consistent labels in fashion. Convert across 17 systems and use the bust, waist and hip columns to choose confidently when a brand sits between sizes.

Dresses size chart

Dresses size chart
INTL	US	UK	EU	AU	JP	KR	CN	IN	CA	MX	BR	IT	FR	RU	TR	ZA	Bust (cm)	Waist (cm)	Hip (cm)
XS	0	4	32	4	5	44	155/80A	30	0	24	34	36	32	38	32	4	78	60	84
XS	2	6	34	6	7	44	160/84A	32	2	26	36	38	34	40	34	6	80	62	86
S	4	8	36	8	9	55	160/84A	34	4	28	38	40	36	42	36	8	84	66	90
S	6	10	38	10	11	55	165/88A	36	6	30	40	42	38	44	38	10	88	70	94
M	8	12	40	12	13	66	165/88A	38	8	32	42	44	40	46	40	12	92	74	98
M	10	14	42	14	15	77	170/92A	40	10	34	44	46	42	48	42	14	96	78	102
L	12	16	44	16	17	88	170/96A	42	12	36	46	48	44	50	44	16	100	82	106
L	14	18	46	18	19	99	175/100A	44	14	38	48	50	46	52	46	18	104	86	110
XL	16	20	48	20	21	110	175/104A	46	16	40	50	52	48	54	48	20	110	92	116
XXL	18	22	50	22	23	120	180/108A	48	18	42	52	54	50	56	50	22	116	98	122

How to use this converter

Pick the garment category you are shopping for.
Choose the country or size system you already know, then the one you want to convert to.
Select your size — every supported country updates instantly.
Check the body-measurement columns to confirm the fit, then copy, print or share the result.

Why sizes differ between countries

Size labels come from national fit blocks developed decades ago from different population surveys. The US and UK use garment-based numbering, most of Europe derives sizes from body measurements in centimetres, and Japan, Korea and China use their own regional standards. Because no global standard exists, matching your measurements to the chart is always more reliable than matching the label.

Frequently asked questions

Related size converters

Women's Clothing Size Converter

Convert women's dress, top, blouse, jacket, coat, sweater and skirt sizes between US, UK, EU, Australian, Japanese, Korean, Chinese and Indian sizing.

Bra Size Converter

Convert bra sizes between US, UK, EU, Australian, French, Italian and Japanese systems, or calculate your size from under-bust and over-bust measurements.

Jeans Size Converter

Convert jeans sizes between US, UK, EU and Italian systems for women and men, including waist measurements in inches and centimetres.

International Clothing Size Converter

Convert clothing, shoe and lingerie sizes between US, UK, EU, AU, JP, KR, CN, IN and 8 more systems. Free, instant and works entirely in your browser.