Shoe Size Converter
Pick your known size or foot length, and this converter instantly maps it across US, UK, EU, and Mondo point scales.
About
About Shoe Size Converter
Shoe sizing never got standardized globally, which is why a US 9 isn't a UK 9 or an EU 9. The US and UK scales both trace back to the barleycorn, an old English unit equal to a third of an inch, while the EU scale (called Paris point) uses two-thirds of a centimeter per size step. Those different base units are the entire reason international conversions feel arbitrary, and this converter exists to skip the mental math.
Buying shoes from an overseas retailer without a reliable size chart is a common way to end up mailing a pair back. The underlying measurement units genuinely differ between regions, not just the labels, so there's no simple offset you can apply in your head. A size that fits perfectly in a US store can run noticeably different in a European or UK equivalent, especially since brands also apply their own lasts on top of the standard scale.
Podiatrists and footwear fitters generally recommend measuring actual foot length rather than trusting your last known size, since feet change gradually with age and even time of day affects measurements slightly due to natural swelling. Converting from a precise foot length in millimeters, rather than a remembered size, produces a much more reliable match.
Choose your starting region and size, or enter your foot length directly in inches or centimeters if you've measured it. The converter cross-references US, UK, EU, and Mondo point scales simultaneously so you see every equivalent size at once.
Sizing data is nobody's business but yours. The conversion logic runs entirely client-side in your browser, so the numbers you type never get sent anywhere or logged on our end.
FAQ
Frequently asked questions
Why don't shoe sizes match across countries?
The US and UK systems are both built on the barleycorn, a third of an inch, while the EU system (Paris point) uses two-thirds of a centimeter, so the scales simply don't align numerically even before accounting for different zero points.
How do I measure my foot length accurately?
Stand on a sheet of paper against a wall, heel touching the wall, mark the tip of your longest toe, then measure that distance in centimeters or inches. Measure both feet, since most people have one slightly larger, and size to the bigger one.
Are men's and women's US sizes actually different scales?
Yes, they're offset by about 1.5 sizes. A women's US 8 corresponds to roughly a men's US 6.5 in the same physical length, which is why unisex sizing charts always list both.
What is Mondo point sizing?
It's a length-based system using the foot's measured length directly in millimeters, used heavily in ski boots, climbing shoes, and some athletic footwear because it removes the ambiguity of regional size labels entirely.
Do all brands follow the standard charts exactly?
Not precisely. Lasts (the physical mold a shoe is built around) vary by manufacturer, so a converted size is a strong starting point, but checking a specific brand's own size guide is worth it for a tighter fit.
What size should I buy if I'm exactly between two sizes?
Size up rather than down. A shoe slightly too big can be fixed with a thicker sock or an insole, but a shoe that's too small will pinch no matter what you put inside it, especially for shoes that don't stretch much, like running shoes.
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