Online shopping across borders means decoding four different size systems at once. This chart converts women’s and men’s clothing sizes between US, UK, and EU standards for tops, bottoms, and dresses, and shows the S/M/L band each size falls into so you can shop confidently from any country’s store.
How it works
Clothing size systems are offset numeric scales rather than physical measurements, so conversion is a table lookup. The common offsets are:
Women's: UK ≈ US + 4 EU ≈ US + 30 to 32
Men's: UK ≈ US (jackets) EU ≈ US chest + 10Because real fit varies by brand and cut, the tool uses standard nominal conversion tables for each garment type. Choose a garment and a known size, and it highlights the matching row and reports every equivalent.
Women’s clothing size conversions
The gap between US and UK women’s sizing catches many shoppers off guard. US women’s sizes are simply four numbers lower than UK sizes for the same garment — a US 6 is a UK 10, a US 8 is a UK 12, and so on up the range. EU sizing then adds a further jump, running roughly 30 to 32 numbers above the US figure: a US 8 is approximately an EU 38–40 depending on the garment category.
| US | UK | EU | Band |
|---|---|---|---|
| 2 | 6 | 32–34 | XS |
| 4 | 8 | 34–36 | XS |
| 6 | 10 | 36–38 | S |
| 8 | 12 | 38–40 | M |
| 10 | 14 | 40–42 | M |
| 12 | 16 | 42–44 | L |
| 14 | 18 | 44–46 | L |
| 16 | 20 | 46–48 | XL |
Note that these are nominal label sizes. Two garments with the same label — one from a US brand, one from a European brand — can differ by several centimetres in the same measurement.
Men’s clothing size conversions
Men’s tops and jackets are commonly sized by chest measurement in inches in the US and UK, which makes the two systems nearly identical at the label level. EU men’s sizing adds approximately 10 to the chest measurement, so a US/UK 40-inch chest jacket is roughly an EU 50.
Men’s bottoms (trousers) in the US and UK are sold by a waist/inseam measurement (e.g., 32×32) rather than a single number, which maps directly and needs no conversion beyond the inch-to-centimetre step for EU brands that use centimetre waist sizes.
Why sizes vary so much between brands
Even within a country, the same number can mean very different things. “Vanity sizing” — the practice of labelling garments with smaller numbers than the underlying measurements justify — is most pronounced in US women’s casual clothing but affects markets worldwide. A garment labelled US 8 from a contemporary US brand may have measurements that historically corresponded to a US 12 or 14.
The result is that a size chart converts labels reliably only between similarly-positioned brands in the same market segment. A US 8 from a budget retailer and a US 8 from a tailored designer label may differ by 2–3 centimetres across every measurement.
The most reliable approach: body measurements
The most consistently accurate method for cross-border shopping is to:
- Take your own body measurements — chest, waist, hips — in both inches and centimetres.
- Look up the brand’s size chart in its size guide (usually accessible on the product page), which shows actual centimetre or inch ranges for each size.
- Use this converter to narrow to the right neighbourhood quickly, then confirm against the brand’s measurement table.
EU brands, particularly Scandinavian and German ones, tend to publish the most detailed measurement tables. UK high-street brands vary significantly. US brands often use only S/M/L/XL alongside a numbered size, with measurement charts sometimes harder to find.
Tips for online orders
- If a conversion puts you between two sizes, check the product’s return policy before deciding whether to size up or down.
- Stretch fabric garments (jersey, knit, stretch denim) are more forgiving of half-size differences than woven fabrics.
- For fitted items like blazers and structured dresses, prioritize shoulder width and bust measurement over the label number, since these are the hardest to alter if the fit is wrong.