maratoolHow to convert shoe sizes between US, UK, EU, and Brazil
Enter a size you already know and read the equivalent in every other country — instantly.
Buying shoes, sneakers, or tennis shoes from a foreign store means decoding a size you have never used. The Shoe Size Converter maps any size to US, UK, EU, Brazil, Japan, Mexico, Australia, and centimeters for men, women, and kids — with a Standard and a Sneakers fit.
How it works
- Choose a category — men, women, or kids. US, UK, and Australian numbering differ by gender; EU, Brazil, and cm do not.
- Pick the system you know — US, UK, EU, or even your foot length in centimeters.
- Read every equivalent — the result cards and the full chart update together.
The formulas behind it
Every system is a fixed function of foot length. EU uses the Paris point (one size = 2⁄3 cm), so EU = 1.5 × foot cm + 3. UK, US, and Australia use the barleycorn (one size = 1⁄3 inch), anchored so US men 9 ≈ 27 cm. Brazil runs about two points below EU, and Japan is simply your foot length in centimeters. The methodology section on the tool spells out each one.
Tennis shoe and sneaker size conversion
The converter defaults to the US Brannock scale — the foot measurer used in shoe stores. Tennis shoes and athletic sneakers often size a little differently, so we checked five brands against the standard. They do not fully agree, which is exactly why a single "sneaker size" or "tennis shoe size" is a myth. All rows below are for the same men’s foot of 26 cm.
| Source | US men | EU | Women (same foot) | Men→women |
|---|---|---|---|---|
| Brannock (US standard) | 8 | 40 | 9 | +1 |
| Nike | 8 | 41 | 9.5 | +1.5 |
| Puma | 8 | 40.5 | 9.5 | +1.5 |
| ASICS | 8 | 41.5 | — | — |
| New Balance | 8 | 41.5 | 9 | +1 |
| Adidas | ~8 | ~41.7 | — | +1 / +1.5 |
Two patterns hold across every brand: the men’s US number maps to the same foot length (US 8 ≈ 26 cm everywhere), and EU runs half a point to a point above the Brannock standard. But the men-to-women gap splits: Nike and Puma use +1.5, New Balance uses +1, and Adidas’ own pages give both. The Sneakers toggle on the tool applies the common Nike/Puma convention; switch it off for the Brannock standard. Sources: Nike, and compiled brand charts on RunRepeat.
Why measuring beats guessing
Because brands disagree by up to a size, the safest input is your actual foot length. Measure heel to longest toe in centimeters, select cm, and let the converter do the rest. These are ISO / Mondopoint standard values, not any single brand’s chart.