Uk to Eu Dress Size Converter

EU dress sizes run roughly 22 numbers higher than UK sizes for women's clothing. UK 6 = EU 34, UK 8 = EU 36, UK 10 = EU 38, UK 12 = EU 40, UK 14 = EU 42, UK 16 = EU 44, UK 18 = EU 46. The pattern is a clean +28 from UK number for the EU number (UK 12 + 28 = EU 40), but the underlying garment measurements are not always identical between brands. Treat the conversion as a starting point, not a guarantee.

EU sizing follows a German/French standard that is approximately based on bust size in centimetres minus a fixed offset. UK sizing has historic ties to imperial measurements and to the British high-street tradition of 'high-street fit', which has crept slightly larger over the past two decades (a UK 12 today is generally a touch roomier than a UK 12 from 1995). When buying from European brands like Zara, Mango, COS or H&M (which uses EU sizes despite the Swedish origin), use the conversion as a guide and check the brand's specific size chart for bust, waist and hip measurements.

Two UK 12s from different brands can vary by 2 to 3 inches in the waist or hip, even though both are labelled identically. EU sizing is no different in this respect. The official EN 13402 standard tries to harmonise EU sizing around bust/waist/hip in centimetres (for example, EU 38 = bust 88-92 cm, waist 72-76 cm, hip 96-100 cm), but most fashion brands ignore this in favour of their own house sizing. Zara famously runs small; Mango's M is closer to a UK 10; COS sits roughly true to chart.

The result is that the UK-to-EU conversion in this calculator is the standard reference number, not the guaranteed correct size for any specific brand. Always check measurements (chest, waist, hip in cm or inches) against the brand's chart before buying online. If you are between sizes (e.g. a UK 12 with hips closer to a UK 14), size up for fitted styles, size to bust for floaty cuts.

Vanity sizing is the slow drift of garment measurements upward while the size labels stay the same. A UK 12 dress in 2026 typically has a 30-31 inch waist; in 1995 a UK 12 had a 27-28 inch waist. The same 'size 12' label hides about 3 inches of expansion. EU sizing has been more resistant to this, particularly in luxury brands where a EU 40 today is reasonably close to a EU 40 from 25 years ago. Mass-market EU brands (H&M, Zara) have followed the UK trend slightly, but not as aggressively.

This means buying EU brands when sized down by the standard conversion (UK 12 = EU 40) sometimes produces clothes that feel tighter than expected, because the EU 40 is closer to the original UK 12 than the modern UK 12 is. If your UK clothes typically feel roomy or you usually size down, consider sizing up by one in EU. The [UK to US dress size](/uk-to-us-dress-size) converter has a similar caveat for shopping US brands, where US sizing has experienced even more vanity creep than UK.

Three scenarios cause regular returns. First, fitted styles (tailored dresses, work shifts, structured blazers) where the EU-to-UK conversion needs to account for cut. Sizing by chest works for tops; sizing by hip works for skirts; sizing by waist works for dresses. The standard conversion works for a 'classic A-line' shape; for anything else, check measurements. Second, brand-specific quirks (Italian brands often run small, Scandinavian brands often run loose). Third, men's-vs-women's sizing where some brands use a unisex EU number that does not map cleanly to UK women's sizing.

When in doubt, order two sizes (the converted EU and one above) and return the one that does not fit. Most online retailers in the EU and UK offer free returns since the Consumer Contracts Regulations 2013 require a 14-day return window. Check the specific retailer's policy; some require returns at your own cost despite the legal minimum.