Shoe Size Converter
This free shoe size converter converts between US, UK, EU, and foot length in centimeters, for both men's and women's sizing. Enter your size in whichever system you know, and every equivalent appears instantly. Nothing you enter is sent anywhere or stored.
How to Use It
- Choose Men's or Women's.
- Choose which system you know your size in: US, UK, EU, or foot length in cm.
- Pick or enter your size.
- Every equivalent size appears instantly.
How It Works
Shoe sizes across countries aren't a clean mathematical conversion of foot length, they're standardized reference charts, the same kind every shoe retailer publishes. This tool looks up your size in that reference chart rather than computing an approximation, so the results match what you'd see on a typical size chart. When you enter a foot length in centimeters that doesn't land exactly on a listed size, it resolves to the closest one.
Men's and women's sizing use genuinely different numeric scales even for the same physical foot length, so gender is a required input here, not just a label. UK sizing is a single scale shared across most footwear; EU (Continental) sizing is based on the Paris point system, roughly two-thirds of a centimeter per size step.
A worked example: a men's foot length of 27.0 cm matches US 9, UK 8.5, EU 42.5 on the reference chart used here, an exact lookup, not a rounded estimate, since 27.0 cm lands precisely on a listed row. A length that fell between two rows (say, 27.2 cm) would resolve to whichever listed size is numerically closest.
Everything runs client-side in your browser. No sizes you enter are sent anywhere or stored.
Frequently Asked Questions
Why is a men's and women's size different for the same foot length?
US and UK sizing use separate numeric scales for men's and women's shoes, even at the exact same physical foot length: a US Women's size runs about 1.5 sizes higher than the equivalent US Men's size. It isn't just a label change, so this converter asks for gender specifically rather than assuming one scale fits both.
Why doesn't my actual shoe match this chart exactly?
This chart shows standard reference sizes, the same kind published by most retailers, but actual fit still varies by brand, by shoe style, and by the last (the mold a shoe is built around). Treat this as a solid starting point for comparing sizes across systems, not a guarantee for a specific brand. Checking that brand's own size chart, or trying the shoe on, is still the reliable way to confirm fit.
Why doesn't this cover kids' sizes?
Kids' sizing isn't a simple extension of the adult scale. It resets and renumbers at a certain point, and different sources define the kids-to-adult transition inconsistently (roughly US kids' 13.5–1, but it varies). Rather than risk a subtly wrong kids conversion, this tool sticks to adult sizing for now.
How should I measure my foot length at home?
Stand on a piece of paper against a wall, mark the tip of your longest toe, and measure from the wall to that mark in centimeters. Measure both feet, since most people have one slightly larger than the other, and use the larger measurement. Measuring in the evening (feet swell slightly over the day) gives a more realistic sizing reference than a first-thing-in-the-morning measurement.
Is EU sizing the same across every European country?
For the most part, yes: EU (Continental/Paris point) sizing is the shared standard across most of continental Europe, unlike US and UK, which are two genuinely separate scales. It's one of the reasons EU size is often the most useful reference point when comparing a shoe made by a European brand against a US or UK size chart.
What if my foot length falls exactly between two sizes on the chart?
This converter resolves a centimeter measurement to whichever standard size is numerically closest, so a length exactly between two sizes could round either way depending on which is a hair closer. In practice, when your foot length sits between two sizes, most fit guides recommend sizing up rather than down, since a shoe that's slightly too big is more comfortable than one that's slightly too small.