Shoe Size Converter
Convert shoe sizes between the EU, US, UK and CM systems.
Tip: Shoe size varies between brands — Adidas usually runs 0.5 size bigger than Nike. Measure your foot length in cm for the most accurate result.
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About this digital tool
The shoe size converter turns a size between the EU (European), US men's, US women's and UK (British) systems, also showing the approximate foot length in centimetres. Choose the system you have, enter the size and get the other values instantly.
The conversion is based on the standard relationship: US men's = EU − 33, US women's = US men's + 1.5 and UK = US men's − 0.5. For EU 42 you get US men's 9, US women's 10.5, UK 8.5 and a foot of about 27.3 cm. It is useful when buying shoes online from foreign shops or when travelling. Be aware that size charts differ slightly from brand to brand, so the results are approximations.
How to use
- Choose the source system (EU, US, UK, CM)
- Enter your size
- Choose the gender (men/women/children)
- See the equivalent size in all systems
- See the foot length in cm
Frequently asked questions
How do I convert EU to US?
For men: US ≈ EU - 33 (e.g. EU 43 = US 10). For women: US ≈ EU - 31 (e.g. EU 39 = US 8). These are indicative values — each brand has its own chart.
How do I measure my exact size?
Stand on a sheet of paper, trace the outline of your foot, and measure the length from the heel to the longest toe. Do it in the evening when the foot is slightly swollen. Add 0.5–1 cm for comfort.
Does size vary between brands?
Yes, noticeably. Nike tends to run slightly narrower, Adidas slightly wider, New Balance offers different widths (B, D, 2E, 4E). Always check the specific brand's chart.
How do I convert EU 42 to US and UK?
EU 42 is US 9 for men, US 10.5 for women and UK 8.5, with a foot length of about 27.3 cm. Choose System: EU, enter 42.