Shoe Size Converter

About the Shoe Size Converter

Converts adult shoe sizes between US, UK and EU systems. Brands vary, so treat the result as a close guide.

How to use this calculator

1. Choose the sizing system you have, such as US, UK, or EU.
2. Enter the shoe size you want to convert.
3. Select the system you want to convert to.
4. Read the converted size and compare it with the brand's size chart if needed.

The formula explained

This tool converts one shoe size label into another sizing system using the standard size relationships for that region. It gives an estimated equivalent size, which is useful because shoe sizing can vary a little by brand.

• US = United States shoe size system
• UK = United Kingdom shoe size system
• EU = European shoe size system
• n = the shoe size value you enter

Step by step method

1. Start with the shoe size label you already know, for example US or UK.
2. Use the converter to match that value to the target system.
3. Check the result against the shoe brand's chart, because some brands fit larger or smaller than average.

Worked example

Problem. Convert a shoe size of US 9 to the EU system.

1. Enter US 9 into the converter.
2. Select EU as the target system.
3. The converted size is approximately EU 42.5.

Tips and common mistakes

• Shoe size conversions are approximate, so always check the brand's own size chart.
• Do not assume men's, women's, and children's sizes convert in the same way, because the systems can differ.

Frequently asked questions