Shoe Size Converter

What this tool does

Shoe Size Converter converts a shoe size between the US, UK and EU sizing systems and an approximate foot length in centimetres, for men’s, women’s or kids’ sizing, using widely published linear approximations. Because shoe sizing isn’t perfectly standardised across brands, the foot length figure is the most reliable reference point.

Shoe sizing famously isn’t one single global standard: the same labelled size means a different actual fit depending on whether it’s a US, UK or EU size, and even differs between men’s, women’s and kids’ ranges within the same country.

This converter applies widely published linear approximations to convert a size in one system into US, UK, EU and an approximate foot length in centimetres, for men’s, women’s or kids’ sizing separately, since the three categories use different conversion offsets. Because real shoe sizing varies by brand and by the specific "last" (the mould a shoe is built around), the foot length figure is the most dependable of the results shown.

How to use Shoe Size Converter

1. Choose the Category: men’s, women’s or kids’.
2. Choose the Size system of the size you already know: US, UK, EU or foot length in cm.
3. Enter the Size.
4. Read the equivalent size in every other system.
5. Check Foot length (cm) as the most reliable cross-brand reference.

Tips for better results

• When buying from an unfamiliar brand, always check that brand’s own size chart rather than relying solely on a general conversion, since the same nominal size can fit differently across brands.
• Foot length in centimetres is the most physically grounded figure here; measure your actual foot length and compare it against a brand’s chart for the most reliable fit.
• Women’s and men’s size conversions use different offsets even within the same country’s system, so make sure the Category selector matches the size you’re converting.
• EU sizes typically increase in whole-number steps while US and UK sizes commonly use half sizes; small rounding differences between systems are normal and expected.

Common use cases

• Converting a shoe size from one country’s sizing system to another before an international purchase.
• Estimating your approximate size in a new sizing system when shopping from an overseas retailer.
• Checking what foot length corresponds to a specific labelled shoe size.
• Comparing men’s, women’s and kids’ size conversions for the same nominal number.

Common mistakes to avoid

• Treating shoe size conversion as perfectly exact across brands; real-world fit varies enough that a converted size should be treated as a starting estimate, not a guarantee.
• Mixing up men’s and women’s category conversions, which use different offsets and will give a noticeably wrong result if swapped.
• Ignoring the foot length figure in favour of the converted size number; foot length is the more physically meaningful reference when comparing across very different brands.