Shoe Size Converter

Shoe size converter

Convert shoe sizes across the systems that matter when you shop internationally: US, UK, EU and foot length in millimetres, with separate men’s and women’s charts. It is for online shoppers buying from another country who need to translate a familiar size into a foreign one.

How it works

Every size system maps to one underlying measurement — foot length — so the tool builds a length-anchored chart and converts through it. The relationships used are:

• US men’s length: mm ≈ 211.7 + (US − 6) × 8.467 (a third of an inch per half size).
• Women’s US runs about 1.5 sizes larger than men’s for the same foot.
• UK is roughly half a size below US men’s; women’s UK about 2 below women’s US.
• EU follows the Paris-point system: EU ≈ mm ÷ 6.667.

You pick a known system and value, and the tool finds the closest row and reads across to every other system.

Example

A US men’s 9 maps to roughly:

Because brand sizing drifts, the most reliable approach is to measure your actual foot length and convert from there. Everything is calculated locally in your browser — nothing is uploaded.