What Is the EU to US Shoe Size Calculator?
Shoe sizing differs around the world, and one of the most common conversions shoppers need is from the European (EU) system to the United States (US) system. This calculator gives you a fast, approximate US shoe size from any EU size, separately for men and women. It is especially handy when buying shoes online from European brands or retailers.
How to Use It
Enter your EU shoe size (whole numbers or half sizes are supported), then choose whether you want a men's or women's conversion. The calculator instantly returns the equivalent approximate US size. Because brands vary slightly, always treat the result as a starting point and check a specific brand's size chart when possible.
The Formula Explained
The relationship between EU and US sizes is close to linear over the common adult range. A simple and widely used approximation is:
$$\text{US men's size} = \text{EU size} - 33$$$$\text{US women's size} = \text{EU size} - 31$$The two-point offset between men's and women's reflects the standard sizing gap, where a women's US size is roughly two numbers higher than the men's size for the same physical foot length.
Worked Example
Suppose you find a pair of sneakers in EU 42 and you are shopping in the men's section. Using the formula: $$\text{US} = 42 - 33 = 9$$ So an EU 42 is approximately a US men's 9. For a woman with EU 38, $$\text{US} = 38 - 31 = 7$$ an approximate US women's 7.
FAQ
Is this conversion exact? No. It is a reliable approximation. Different manufacturers round and grade sizes slightly differently, so the true fit can vary by half a size.
Why are men's and women's results different? The US system uses separate scales for men and women. For the same EU number, the US women's value is about two sizes higher than the US men's value.
Does this work for kids' sizes? The formula here targets adult sizing. Children's shoe size systems use different offsets and are not covered by this calculator.
