Shoe Size Converter — Free Online Tool

What Is Shoe Size Converter?

A free online shoe size converter for men, women, and children. Convert between US, UK, EU, and centimeter sizing systems. Includes a complete size chart with all available sizes for each gender. Perfect for online shopping, international purchases, and finding your correct fit across different brands.

Shoe sizes are notoriously inconsistent across countries and brands. A US size 10 is a UK size 9, a European size 43, and approximately 27.5 centimeters. When shopping online from international retailers or buying shoes from different countries, getting the conversion right is essential. Shoe Size Converter handles conversions for men, women, and children across all major sizing systems.

Select the gender (men, women, or kids) — sizing systems differ significantly by gender. Men's sizes are typically larger and use different conversion ratios than women's. Choose your input sizing system: US, UK, EU, or CM (centimeters). Enter your known size and the equivalent sizes in all other systems are displayed instantly.

The converter uses standard conversion tables: US men's sizes are approximately 1 size larger than UK men's sizes. Women's US sizes are approximately 2 sizes larger than UK women's sizes. EU sizes are consistent across genders but use a different numerical scale. CM sizes represent the actual foot length in centimeters.

The complete size chart shows all available sizes for the selected gender category across all four systems. Use this chart to browse across the full size range, compare systems side by side, and find your size in an unfamiliar system. The chart covers the most commonly available sizes for each gender.

Real-World Use Cases for Shoe Size Converter

Buying European Shoes as a US Customer

A US woman wears US size 8. She sees a great pair of Italian shoes in size 39. Select Women category, enter US 8. The converter shows EU 38.5 as the equivalent — size 39 may be slightly too large. She searches for size 38.5 or 39 depending on the brand's sizing recommendations.

Converting Kids Shoe Sizes for a Gift

A relative from the UK sends a gift: UK kids size 13. Select Kids category, enter UK 13. The US equivalent is 13.5 and the EU equivalent is 31. The CM measurement helps confirm: the shoe fits a foot length of approximately 19.5 cm.

Using Centimeter Measurement for the Best Fit

You measured your foot: 27 cm long. Enter 27 in CM mode. The converter shows US men's 9, UK men's 8, EU 42.5. Since foot measurements are the most accurate sizing method (not affected by brand variations), use CM as your primary input and reference the other sizes when shopping.

Why Use Shoe Size Converter?

Men, women, and kids size tables
US, UK, EU, and CM systems
Nearest size matching
Complete size chart for browsing

How to Use Shoe Size Converter — Step by Step

Select your gender (men, women, or kids).

Choose your input sizing system and enter your size.

View the converted sizes across US, UK, EU, and CM.

Use the full size chart for reference.

Who Is Shoe Size Converter Best For?

online shoppers
international buyers
parents buying kids shoes

Pro Tips for Shoe Size Converter

1Always use the CM (centimeter) option when possible. It is the most accurate sizing method because it is a direct measurement of your foot, not a relative scale.
2Different brands fit differently even within the same size number. Use the converter to find your starting size, then check brand-specific size guides and customer reviews.
3Women's and men's sizes are not directly convertible. Women's US 8 is approximately men's US 6.5. Always select the correct gender category.
4When buying shoes from a country with a different sizing system, order your converted size plus one half-size larger if available. It is easier to add an insole than to stretch shoes that are too small.

Shoe Size Converter — Frequently Asked Questions

What is the difference between US and UK shoe sizes?

US men's sizes are typically 1 size larger than UK men's sizes. For women, US sizes are about 2 sizes larger than UK sizes.

How do I measure my foot for shoe size?

Stand on a piece of paper, trace your foot, and measure from heel to longest toe in centimeters. Use the CM input to find your size.

How accurate are the unit conversions?

Conversions use NIST-standard conversion factors with precision up to 15 significant digits. Currency exchange rates update every 10 minutes from a free data source.

Can I convert between any two units?

Yes. Each converter supports all standard units within its category. For example, the length converter handles metric, imperial, and nautical units.

Is Shoe Size Converter really free to use?

Yes, Shoe Size Converter is completely free with no hidden charges, no usage limits, and no premium tiers. You can use it as often as you need without signing up or providing any personal information.

Ready to Use Shoe Size Converter?

Free online tool — works in your browser, no sign-up required. Start using it right now.

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