Why UK sizing stands apart

Britain is one of the few markets that never adopted the EU point scale, so a UK size sits on its own number line: a UK 8 men's shoe is an EU 42, and a UK 6 women's shoe is an EU 39. Children's sizing in the UK runs its own infant scale from UK 0 up to about UK 13.5, then switches to adult numbering from UK 1, which is why a school shoe fitting at a British retailer often starts by asking for age rather than a size the parent already knows.

Size chart by system

The table below converts a chosen size, or a measured foot length, across EU, US, and UK, separately for men, women, and children, since each scale is built differently and the same number does not line up between them. Starting from a known size shows the label a shoe box would carry elsewhere; it is a size match, not a guarantee of fit.

Getting a child's fitting right

Many UK shoe shops still offer a free measuring service with a Brannock-style gauge, and it is worth using every couple of months for a growing child, since a foot can move up close to a full size within a school term. Leaving roughly a thumb's width of room past the longest toe is the usual guidance given in store, rather than buying a size up outright, which can leave the shoe too loose at the heel.

Limits of this converter

Shoe sizes are not tightly standardised between brands: a UK 7 trainer from one label can measure a good centimetre shorter than a UK 7 from another, and width fittings (narrow, standard, wide) are not covered here at all. The figures follow commonly published size charts and give an indicative equivalence, not a promise of fit. Trying the shoe on, or checking the brand's own chart, remains the safer route before ordering from abroad.