Why do shoe and clothing sizes differ between US, UK, and EU?

Each region standardized its own sizing scale independently, based on different measurement systems and reference lasts (for shoes) or body measurement conventions (for clothing) — there's no mathematical formula between them, only published equivalence tables like the one on this page.

Are these size conversions exact?

They're standard published equivalences, but actual fit varies by brand and individual product — always check the specific brand's own size chart when it's available.

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Clothing & Shoe Size Converter

Convert shoe and clothing sizes between US, UK, and EU sizing. Sizes are standardized reference tables, not a formula — pick a category and your known size below.

Full Size Chart

Fit varies by brand — use this as a starting reference, not a guarantee.