US → EU · Shoe Size

Shoe Size Converter

Convert shoe sizes: US 9 to EU 42, plus UK, JP and foot length cm with instant comparison.

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Common conversion	Result

About Shoe Size conversion

Shoe sizes convert via foot length cm: US Mens = (cm*3 -22), EU = (cm*1.5), UK = US -0.5, JP = cm. For example, 27cm foot = JP 27, US 9, EU 42, UK 8.5.

These formulas come from ISO 9407 and brand charts (Nike, Adidas). 1cm ≈0.39in, EU 42 =27cm =US 9.

Units supported: Foot length cm and US/UK/EU/JP shoe sizes.

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Frequently asked questions

What units can I convert with the Shoe Size converter?

Foot length cm and US/UK/EU/JP shoe sizes.

How accurate is this undefined converter?

This converter uses standard international definitions for every undefined unit, so results are precise to several decimal places, accurate enough for cooking, travel, homework, or any everyday use.

Can I convert in both directions?

Yes, enter a value in either field and the other updates instantly. You can also tap the swap button to flip the two units, or use the copy-link button to share this exact conversion.