Shoe Size Converter
Convert shoe sizes between US, UK, and EU for men, women, and kids.
This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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Request a ToolHow to Use the Shoe Size Converter
Convert any shoe size to US, UK, or EU in seconds:
- Select gender. Choose Men, Women, or Kids since sizing scales differ for each group.
- Choose your current size system. Select US if you know your American size, UK for British, or EU for European.
- Enter your size. Type your current size number. Half sizes are supported.
- Read the conversions. All three size systems appear instantly in the breakdown below the result card.
About International Shoe Sizing
Shoe sizes vary significantly between the United States, United Kingdom, and Europe. US men's sizes run about half a size larger than UK sizes for the same foot. EU sizes correspond roughly to the foot length in centimeters multiplied by 1.5. Women's US sizes typically run 1.5 to 2 sizes larger than the equivalent men's size. Kids' sizing in the US runs from infant (0-4C) through big kids (3.5-7Y), with the EU system using different number scales throughout.
Conversions are based on standard industry sizing tables and are approximate. Actual fit varies between brands and shoe constructions. When ordering internationally, always check the specific brand's size chart when available.
Frequently Asked Questions
What is a US size 10 men's in EU?
A US men's size 10 converts to approximately EU size 44. The UK equivalent is 9.5. These conversions follow the standard international sizing table, though some brands may vary by half a size in either direction.
Are men's and women's shoe sizes the same in EU?
EU sizes use a single scale based on foot length in Paris points (2/3 of a centimeter each), so technically a EU 40 is the same foot length regardless of gender. However, shoe width and last shape differ between men's and women's constructions, so a men's EU 40 and a women's EU 40 will feel different even though the number conversion is the same.
How do I convert kids' shoe sizes to adult sizes?
In the US system, kids' big sizes (youth) transition to adult sizes at around 7Y, which is equivalent to a women's 8.5 or a men's 7. The EU kids' scale runs continuously from toddler through adult, making it somewhat simpler. When a child outgrows US size 7Y, they typically move to a women's US 8.5 or men's US 7.
Why do shoe sizes differ between countries?
Shoe sizing systems developed independently in different countries using different measurement bases. The US and UK systems both use barleycorn units (1/3 inch increments) but start at different baseline lengths. The EU system uses Paris points (2/3 centimeter). Japan, Mondopoint, and other systems exist as well. None of these were designed to align with each other, which is why conversions require tables rather than simple formulas.