US / UK / EU conversion (adult).
Converts between US, UK, and EU sizing systems. Roughly: EU = US + 33, UK = US − 1 (men's).
Women's sizing offsets differently — always check brand-specific guides.
Shoe sizing was never standardized globally the way some other measurements were, which is why the conversion factors are approximate rather than exact — brand-to-brand variation within the same stated size is common enough that trying on a specific model is still the most reliable check.
US Men 9 ≈ UK 8 ≈ EU 42.
Yes — US women's is roughly 1.5 sizes larger than men's for the same physical foot length.
Trace your foot on paper, measure heel to longest toe. Compare to a size chart for your target brand.
Yes — children's sizing uses its own separate scale from adult sizing in most systems, and since kids' feet grow quickly, checking length every few months matters more than relying on a size number alone.