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UK to US women’s clothing sizes

Take 4 off a UK women’s size to get the US size: a UK 12 is a US 8, and a UK 10 is a US 6. Next, John Lewis, ASOS and Marks & Spencer all publish this step for UK 6 to 24.

This page is for dresses, tops, coats and other womenswear labelled in numbers. For jeans labelled by waist, see US to UK sizes and jeans.

By · Published 2 November 2026

UK to US women’s size chart

UKUSEU / FRAU
40324
62346
84368
1063810
1284012
14104214
16124416
18144618
20164820
22185022
24205224
26225426
28245628

Australian sizes use the same numbers as UK sizes in every source we checked. Italian and Japanese sizes are on the full converter and the Italian sizes page.

Each UK size in US sizes

  • UK 4 is a US 0 and an EU 32. ASOS prints US 1 here; every other source we checked prints US 0.
  • UK 6 is a US 2 and an EU 34.
  • UK 8 is a US 4 and an EU 36.
  • UK 10 is a US 6 and an EU 38.
  • UK 12 is a US 8 and an EU 40.
  • UK 14 is a US 10 and an EU 42.
  • UK 16 is a US 12 and an EU 44.
  • UK 18 is a US 14 and an EU 46.
  • UK 20 is a US 16 and an EU 48.
  • UK 22 is a US 18 and an EU 50.
  • UK 24 is a US 20 and an EU 52.
  • UK 26 is a US 22 and an EU 54.
  • UK 28 is a US 24 and an EU 56. This row rests mainly on Next, so treat it with extra care.

Where the charts disagree

  • Next, John Lewis, ASOS and Marks & Spencer agree from UK 6 to UK 24, and Next and John Lewis agree to UK 26.
  • UK 4 rests on Nordstrom and ASOS for EU 32, and on Nordstrom, Joe’s Jeans and Veronica Beard for US 0.
  • UK 28 rests mainly on Next.

Why brands still vary

A conversion maps one label to another. It cannot know how a particular brand has cut and graded its sizes.

  • Labels drift. Vanity sizing means the same number can describe a larger garment than it did years ago, and brands do not drift at the same pace.
  • Body and garment measurements differ. A body chart says which body a size is meant for; a garment chart measures the finished item.
  • Cut and fabric change the answer. A slim shirt, a relaxed coat and a stretch trouser can carry the same label and leave very different room.

Here is a worked example from the converter. Marks & Spencer lists a UK 12 at a 92 cm bust, 75 cm waist and 100 cm hips. Nordstrom’s designer conversion chart lists a US 8, which converts to UK 12, at about 89 cm bust, 69 cm waist and 95 cm hips. The labels convert cleanly, yet the waist differs by about 6 cm.

How to measure yourself

A conversion only shortlists a size. Your own measurements in centimetres, checked against the brand's size chart, decide it.

  1. Bust: measure around the fullest part, keeping the tape level under your arms.
  2. Waist: measure around the narrowest part of your natural waist, usually just above the belly button.
  3. Hips: stand with your feet together and measure around the fullest part of your hips and seat.

Keep the tape snug but not tight, and wear light clothing. Then look for whether the brand's chart shows body measurements or garment measurements; a garment measurement includes the room the item is cut with. Our explainer on what "true to size" means covers how to read fit notes such as "runs small" or "relaxed fit".

A note for merchants

Shoppers search for conversions because a single size label does not tell them how a garment will fit. If you sell clothes online, publish a size chart in centimetres for each product, say whether it shows body or garment measurements, and add a short fit note. A free size chart template is a quick place to start. On Shopify, Rendered Fits recommends a size for each product from your own size chart, so shoppers do not need a converter; there is a Free plan.

Sources: Next size guide, John Lewis international size charts, ASOS women’s size charts (Internet Archive copy, 2025), Marks & Spencer womenswear size guide, Nordstrom designer conversion size chart, Veronica Beard jeans size and conversion guide, Joe’s Jeans size chart. Figures are taken from the tables in our clothing size converter, compiled on 29 September 2026. A value appears only where at least two published guides support it, and a dash means there is no consistent published figure.

Other size conversions

Every table in one place: the clothing size converter, or the size conversion guides index.

Frequently asked questions

What is a UK size 12 in US sizes?

A UK women’s 12 is usually a US 8 and an EU 40. Next, John Lewis, ASOS and Marks & Spencer all publish this mapping, but the garment itself can still fit differently between brands.

What is a UK 10 in US sizes?

A UK 10 is usually a US 6 and an EU 38.

What is a UK 16 in US sizes?

A UK 16 is usually a US 12 and an EU 44.

Is a UK 8 a US 4?

Yes. Published retailer charts list a UK 8 as a US 4 and an EU 36.

Is the US size always 4 less than the UK size?

For women’s clothing in the charts we checked, yes from UK 6 to UK 28. At UK 4, ASOS prints US 1 while other sources print US 0. Jeans labelled by waist and shoes follow different rules.

About Rendered Fits. Rendered Fits is a Shopify app for fashion brands that recommends a size for supported products from the brand's own size chart, and can show shoppers an optional AI try-on preview. There is a Free plan, and Complete is $349 a month with a 14-day trial.

Related: clothing size converter · what "true to size" means · size chart template

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