Buying shoes across borders can turn a familiar size into a puzzle. A UK 8 might be marked EU 42 on one website and EU 42.5 on another, while the US equivalent also depends on whether the shoe is sold for men or women. A shoe size conversion UK EU US reference provides a starting point, but the manufacturer’s chart should guide your final choice.
These examples compare adult shoe sizes and show how to check fit using your actual foot measurements, particularly when ordering from international retailers.
Quick UK, EU and US shoe size conversions
There is no conversion table followed by every footwear company. The examples below come from Nike’s published adult footwear charts. They show equivalents within that brand; other manufacturers may use different labels. Always select the correct men’s or women’s range.
Men’s UK shoe size chart examples
UK 7 = US men’s 8 = EU 41.
UK 8 = US men’s 9 = EU 42.5.
UK 9 = US men’s 10 = EU 44.
UK 10 = US men’s 11 = EU 45.
UK 11 = US men’s 12 = EU 46.
Here, the US men’s number is one higher than the UK number. That pattern is useful, but it does not apply automatically to every brand.
Women’s UK shoe size chart examples
UK 4 = US women’s 6.5 = EU 37.5.
UK 5 = US women’s 7.5 = EU 38.5.
UK 6 = US women’s 8.5 = EU 40.
UK 7 = US women’s 9.5 = EU 41.
UK 8 = US women’s 10.5 = EU 42.5.
Women’s US numbering differs from men’s. A US 9 men’s shoe and a US 9 women’s shoe do not represent the same labelled size. Some unisex trainers show both numbers; read the complete label.
How to convert EU to UK shoe size
For an eu to uk shoe size conversion, find the EU column on the footwear maker’s chart, then read across to UK sizing for the correct adult range. Subtracting a fixed number from an EU size is unreliable because European labels and UK half sizes do not always line up.
Take EU 42. Nike’s men’s chart pairs it with UK 7.5, while the standard EU column on Clarks’ men’s chart pairs EU 42 with UK 8. Neither chart is necessarily wrong: they express different manufacturers’ systems.
When a retailer lists EU sizes only, look for the brand’s foot-length recommendations in centimetres or millimetres before choosing.
How to convert US to UK shoe size
A us to uk shoe size conversion needs two details: the shoe’s category and its manufacturer. In Nike’s men’s chart, US 10 corresponds to UK 9; in its women’s chart, US 9.5 corresponds to UK 7.
Some international shops use a single dropdown marked US. Before ordering, confirm that it refers to the range pictured, especially for unisex footwear. A retailer’s automatic size translation may also differ from the manufacturer label.
Why shoe brands use different conversions
Size labels are not a guarantee of identical physical dimensions. Companies build shoes around different lasts, the foot-shaped forms used in footwear development. Their toe shapes, grading and fit allowances influence how shoes feel.
Clarks publishes its own EU equivalents alongside a separate standard EU column, showing that more than one conversion convention exists. Nike also explains that the CM/JP figure printed on a shoe box is not necessarily the same as the measured foot length in its charts.
A pointed leather shoe, broad-toed walking trainer and snug running shoe can therefore feel different despite similar labels. Consider the conversion a shortlist, not a final fit test.
Measure your feet before buying online
Foot length offers a better comparison than memorising conversions. Gather paper, a pen and a ruler. Stand on a hard, flat floor wearing the socks you plan to use with the shoes.
Place one foot on the paper with your weight naturally distributed. Have someone mark the back of your heel and the tip of your longest toe, keeping the pen upright. Measure between the marks in millimetres. Repeat with the other foot and use the longer measurement in the brand’s foot-length chart.
Measure while standing because feet can spread under weight. Avoid adding an arbitrary centimetre before checking a manufacturer’s guide: the chart already reflects how the maker relates foot length to its shoe sizes.
Our guide to measuring feet for shoes offers more detail if your current size feels less dependable or your feet measure differently.
Example: switching from Clarks to Nike
Suppose you wear men’s UK 8 Clarks shoes and want to order Nike trainers from a US retailer. Clarks’ standard EU column associates UK 8 with EU 42. Nike lists men’s UK 8 as EU 42.5 and US 9. Copying the EU 42 label from your old pair could therefore point to a different Nike size.
Start instead with Nike’s own chart, cross-check your measured foot length, and read the particular trainer’s fit guidance. Check the return policy, too. The difference in conversion does not prove either brand runs larger.
Check width and shape as well as length
Even a careful conversion cannot describe every foot. Notice pressure across the forefoot and instep, heel movement, and room around your toes. If a shoe squeezes the sides but fits lengthwise, a wider fit may help more than sizing up.
Our guide to how shoes should fit covers an indoor try-on, while wide-fit shoes explained helps identify width-related discomfort. Walk briefly on a clean surface indoors before removing tags, so returning an unsuitable pair remains possible.
Frequently asked questions
Is EU 42 always UK 8?
No. Some brands associate EU 42 with UK 8 and others with UK 7.5. Check the specific manufacturer’s chart.
Are men’s and women’s UK sizes interchangeable?
Not necessarily. Their fit and width specifications may differ, and their US conversions certainly can. Use the chart for the range being sold.
Can centimetres tell me my exact shoe size?
Foot length is a useful cross-check, not a complete fit guarantee. Compare the measurement with the brand’s own guide and account for width.
What if my foot length falls between two sizes?
Follow the brand’s model-specific guidance. If none is given, compare fit feedback and return terms rather than automatically choosing the larger option.
Make the conversion a starting point
The most reliable approach combines the right men’s or women’s conversion chart with a fresh foot measurement and an assessment of shoe width. That takes a little more effort than copying a number, but it makes international footwear shopping much less uncertain.
