Is the shoe size converter free?

Yes, completely free with no signup and no usage limits.

Does my data leave my device?

No. All conversions run in JavaScript inside your browser. Nothing is sent to any server.

Does it work on mobile?

Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.

Why do men and women have different US sizes?

US shoe sizing historically uses different scales for men and women. Women's US sizes are approximately 1.5 sizes larger than men's for the same foot length. UK and EU sizes are more universal, though slight variations exist between manufacturers.

How accurate are the conversions?

The conversions follow the standard international correspondence tables. However, fit can vary between brands and styles — always try shoes on when possible, especially when converting between systems for the first time.

Shoe Size Converter

Convert shoe sizes between US, UK, EU, and CM for men and women across all major standards.

100% client-side · no upload

Settings Size Gender Sizing system

Output

How to use

Select whether the size is for men or women.
Choose the sizing system you know your size in (US, UK, or EU).
Enter your size and click Convert to see equivalents in all systems.

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Frequently Asked Questions

Is the shoe size converter free?: Yes, completely free with no signup and no usage limits.
Does my data leave my device?: No. All conversions run in JavaScript inside your browser. Nothing is sent to any server.
Does it work on mobile?: Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.
Why do men and women have different US sizes?: US shoe sizing historically uses different scales for men and women. Women's US sizes are approximately 1.5 sizes larger than men's for the same foot length. UK and EU sizes are more universal, though slight variations exist between manufacturers.
How accurate are the conversions?: The conversions follow the standard international correspondence tables. However, fit can vary between brands and styles — always try shoes on when possible, especially when converting between systems for the first time.

Last updated: 2026-05-20 By jarvisbox