EU 42 to UK – Complete Size Guide for Shoe & Clothing

Shopping across European and UK sizing systems often leads to one recurring question: what does EU 42 mean in UK sizes? The answer is not quite as simple as a single number, because conversions differ between shoes and clothing, and again between men’s and women’s items. Understanding those differences can save time, reduce returns, and make online shopping far more straightforward.

The EU sizing system measures foot length in centimetres using the Paris point, while the UK system relies on the barleycorn, an older unit of measurement. This fundamental difference means that a direct one-to-one conversion does not exist across all categories or brands. The table below provides the most commonly accepted equivalents, but individual manufacturers may apply their own adjustments.

What is EU size 42 in UK shoes?

EU 42 to UK women’s shoe size

For women’s footwear, EU 42 typically converts to UK 8.5 or UK 9. Different retailers apply slightly different mappings. Famous Footwear’s chart lists women’s EU 42 as UK 9, while Shoe City’s chart places it at UK 9.5 for US women’s 11.5. Grivet Outdoors shows UK 8.5 for the same EU size. Because of this variation, checking the brand’s own size guide before ordering is advisable.

Nike’s women’s footwear chart organises sizes by foot length in centimetres rather than offering a simple UK label, which further illustrates why relying on a single conversion number can be misleading. When in doubt, measure your foot in centimetres and compare it directly to the brand’s length-based table.

EU 42 to UK men’s shoe size

Men’s shoe conversions are more consistent. EU 42 almost always corresponds to UK 8 in men’s charts. ASOS lists UK 8 as equal to EU 42 for men’s shoes, and Famous Footwear’s men’s column agrees. Some brands may show EU 42 as UK 7.5, particularly when half-size rounding is applied, but UK 8 is the most widely accepted equivalent.

How EU 42 compares to UK 8

While EU 42 and UK 8 are often treated as interchangeable for shoes, they are not mathematically identical. The EU system increments by approximately 0.67 cm per size (the Paris point), whereas the UK barleycorn system uses one-third of an inch. This means that an exact match depends on foot length rather than the size label. Begg Shoes notes that EU sizes jump roughly five-sixths of a UK size per step, explaining why rounding occurs.

• EU 42 is not a single UK size for all categories; it varies between shoes and clothing, and between men’s and women’s items.
• For shoes, EU 42 most commonly converts to UK 8, though some brands label it as UK 7.5 due to half-size rounding.
• Women’s shoe conversions for EU 42 range from UK 8.5 to UK 9.5 depending on the retailer’s chart.
• Clothing sizes are more variable: EU 42 typically corresponds to UK 12 for women’s dresses and UK 42 for men’s jackets, but these figures shift across brands.
• The EU system is based on foot length in centimetres, while the UK system uses an arbitrary historical scale, causing non-linear differences between the two.

What is size 42 in UK clothes?

Clothing conversions are markedly less standardised than footwear. EU 42 in clothing does not correspond to the same physical measurements as EU 42 in shoes, and the numbers vary significantly by garment type and gender.

EU 42 to UK women’s clothing size

In women’s clothing, EU 42 is commonly listed as UK 12 for dresses, tops, and trousers. This equates roughly to a bust measurement of 92–96 cm. However, many brands produce garments labelled UK 10, UK 12, or even UK 14 for the same EU 42, depending on the fit model and target market. The English Brands size table provides a useful reference but notes that its values are indicative rather than guaranteed.

EU 42 to UK men’s clothing size

Men’s clothing uses a different logic. EU 42 for men’s jackets and suits typically converts to UK 42, which corresponds to a chest measurement of around 106 cm. For men’s trousers and shirts, the conversion changes again: EU 42 in trousers is usually UK 32 in waist size. The lack of a single standard means that checking the garment’s specific body measurements is always more reliable than relying on the EU number alone.

How do nearby EU sizes (41, 43, 44) convert to UK?

Understanding how adjacent EU sizes map to UK equivalents helps build a clearer picture of the overall system. Each whole EU size step represents roughly two-thirds of a centimetre in foot length, which translates to about five-sixths of a UK size.

EU 41 to UK

EU 41 is generally UK 7.5 for men’s shoes and UK 7.5–8 for women’s shoes, depending on the chart. The half-step relationship between EU and UK sizing means that EU 41 sits between full UK sizes in many cases.

EU 43 to UK

EU 43 converts most commonly to UK 9 for men’s shoes and UK 9.5–10 for women’s shoes. The step from EU 42 to EU 43 adds roughly 0.67 cm in length, which pushes the UK equivalent up by approximately one full size.

EU 44 to UK

EU 44 maps to UK 10 for men’s shoes and UK 10.5–11 for women’s shoes. This size is frequently requested for larger women’s footwear and is commonly stocked by brands that cater to extended sizing.

How to convert UK sizes to EU (shoes and clothing)

The reverse conversion follows the same principles in the opposite direction. Knowing your UK size and wanting the EU equivalent is a common scenario for shoppers buying from European brands.

UK to EU shoe size conversion

For men’s shoes, UK 8 equals EU 42. UK 7 equals EU 41, and UK 9 equals EU 43. A rough rule of thumb is to add 33 or 34 to the UK size, but this approximation becomes less accurate for half sizes and for women’s conversions. Laughing Hens provides a detailed conversion chart that covers both whole and half sizes for men and women.

UK to EU clothing size conversion

Converting UK clothing sizes to EU is less straightforward. A UK women’s 12 typically corresponds to EU 42, but a UK 10 may be EU 40, and a UK 14 may be EU 44. For men’s jackets, UK 42 equals EU 42, but for trousers, UK 32 waist is usually EU 42. Because clothing dimensions vary so much by brand and cut, using body measurements rather than size labels is the most reliable method.

How have EU and UK sizing systems evolved?

The differences between EU and UK sizing are rooted in history. Understanding that evolution helps explain why no single conversion table can be perfectly accurate for every brand.

1. 1960s – The EU size standard based on the Paris point (2/3 cm) became widely established across continental Europe.
2. 1980s – UK sizing was standardised around the barleycorn system, a unit of approximately one-third of an inch originally used in the shoe trade.
3. 2000s – The rise of online shopping created widespread demand for conversion guides as consumers began buying across markets more frequently.
4. 2025 – Current conversion tables still show variations between brands and retailers. No universal standard has been adopted, partly because the systems measure different physical quantities.

What is known and what remains uncertain about EU 42 to UK conversions?

Why do EU and UK size systems differ?

The two systems were developed independently using different units of measurement. EU sizing for shoes is based on the Paris point, which equals two-thirds of a centimetre. A size 42 shoe therefore corresponds to a foot length of roughly 28 cm. UK sizing, in contrast, uses the barleycorn, a unit equal to one-third of an inch. This difference in base measurement means that the two scales are not directly proportional; one EU size step corresponds to about five-sixths of a UK size step rather than a full size.

Clothing sizing evolved from even more varied origins. European clothing sizes often reference body measurements in centimetres, while UK clothing sizes were developed from different historical conventions for men’s and women’s garments. No international standard forces brands to adhere to exact conversions, and many manufacturers adjust fits for their target markets. European brands, for example, may produce narrower shoe fits than some UK brands, which can affect how a given size feels even when the labelled conversion is correct. The ISO 19407:2015 standard for footwear sizing exists but is not universally adopted across all brands or regions.

What do footwear specialists and retailers say about EU 42 to UK?

Several retailers and specialist blogs have published their own conversion guidance. While all agree on the general range, each source adds nuance based on its own product range and customer data.

“Contrary to common understanding, EU sizes do not translate directly to UK sizes. Typically they jump around 5/6 of a UK size for every EU size.”

– Begg Shoes blog (2025)

“EU sizing uses a continental scale where each whole size equals about two-thirds of a centimeter of foot length.”

– Grivet Outdoors size chart

“View our men’s footwear size chart… find out which size is best for your measurements.”

– ASOS size chart

Summary: what to remember about EU 42 to UK conversions

EU 42 converts most reliably to UK 8 for men’s shoes and UK 8.5–9 for women’s shoes, but brand-specific charts may vary. For clothing, EU 42 equates to UK 12 in women’s garments and UK 42 in men’s jackets, though these numbers shift across manufacturers. Measuring foot length in centimetres and comparing it to a brand’s size table remains the most dependable approach for footwear. For clothing, body measurements such as bust, chest, waist, and hips should take priority over the EU label alone. For a related sizing reference, see our guide on Black Converse High Tops – Sizing Guide for Women, Men, Kids.

Frequently asked questions about EU 42 to UK

For another useful conversion guide, see 5ft 8 in CM – Exact Conversion to 172.72 cm.