Shoe Size Converter

Using a shoe size converter is straightforward. You start with what you know, your current size in one system, and convert it to the system you need. Most converters ask you to select your gender (since men's and women's sizes run differently) and then input your known size.

If you already know your US size, you can convert directly to UK, EU, or centimeter measurements. If you only have a foot measurement in inches or centimeters, you can use that as your starting point instead. A few things to keep in mind:

• Always check whether the converter is using men's or women's sizing, since the same number means different things in each.
• Half sizes don't always translate perfectly between systems. When that happens, it's usually safer to size up.
• Brand sizing can vary even within the same country's system, so treat any conversion as a strong estimate, not a guarantee.

When in doubt, measuring your foot directly and comparing it to a brand's specific size chart is the most reliable approach.

US and UK shoe sizes are close, but they're not the same. For men, UK sizes run about half a size smaller than US sizes. So a US men's 10 is roughly a UK 9.5. For women, the gap is larger: US women's sizes are about 2 sizes bigger than UK sizes, meaning a US women's 8 converts to a UK 6.

One thing worth knowing: some UK brands, especially heritage ones, can run slightly narrow compared to American styles. So even if the size converts correctly, the fit might feel different depending on the shoe's construction.

European shoe sizes work on a completely different scale, which is why the jump from US to EU sizing can feel confusing at first. EU sizes are based on the Paris Point system, where each size unit equals about 6.67 millimeters of foot length. The numbers end up in the 35 to 48 range for most adults.

A general rule of thumb: men's EU size is roughly your US size plus 33. Women's EU size is approximately your US size plus 31. These aren't exact, but they get you in the ballpark fast.

Keep in mind that EU sizing doesn't use half sizes in many cases. If you're between sizes, check the brand's return policy before committing, or look for brands that do offer half-size EU options.

Centimeter-based sizing is common in Japan and parts of Asia, and it's honestly one of the more intuitive systems out there. The size is simply the length of your foot in centimeters, measured from the heel to the tip of your longest toe. A person with a 26 cm foot wears a size 26 in the Japanese system.

To convert your foot length in centimeters to a US size, use these approximate equivalents:

• 24 cm = US Women's 7 / US Men's 6
• 25 cm = US Women's 8 / US Men's 7
• 26 cm = US Women's 9 / US Men's 8
• 27 cm = US Women's 10 / US Men's 9
• 28 cm = US Women's 11 / US Men's 10
• 29 cm = US Men's 11
• 30 cm = US Men's 12

Because CM sizing is tied directly to foot length, it tends to be the most accurate starting point when you're unsure of your size in any other system. Measure your foot, find your centimeter length, and work outward from there.

This trips people up more than almost anything else in shoe shopping. Men's and women's sizes in the US are not interchangeable, and the difference isn't just about width. A women's size 9 and a men's size 9 are not the same shoe.

Generally speaking, women's US sizes run about 1.5 to 2 sizes larger than men's for the same foot length. So a woman who wears a US women's 9 would typically wear a US men's 7 or 7.5. This matters a lot when you're shopping unisex styles or kids' shoes that cross into adult sizing.

Width also tends to differ. Men's shoes are typically built on a wider last (the mold used to shape the shoe), so women who switch to men's sizing for broader fit might find the length works but the heel fits loosely. It's not a perfect swap, just a useful conversion to know.

Here's a comprehensive reference chart that covers the major sizing systems used around the world. This covers US men's and women's, UK, EU, and centimeter measurements all in one place.

These figures represent standard averages across most major footwear brands. Individual manufacturers sometimes use slightly different lasts or size scales, so it's always worth cross-checking with a brand's own size chart when you're buying from them directly.

All the conversion charts in the world won't help much if you're starting from the wrong size. Measuring your foot at home takes about five minutes and gives you a reliable baseline.

Here's what you'll need: a piece of paper larger than your foot, a pen or pencil, a ruler or tape measure, and a flat wall.

1. Place the paper on a hard floor against a wall. Stand on it with your heel touching the wall.
2. Trace around your foot as closely as possible, keeping the pen vertical (not angled inward).
3. Mark the longest point of your foot, usually the tip of your big toe or second toe depending on your foot shape.
4. Measure the distance from the back of the heel mark to the longest toe mark. That's your foot length.
5. Repeat with the other foot. Most people have one foot slightly larger than the other, and you should always size for the bigger foot.

Measure in the afternoon or evening if you can. Feet tend to swell slightly throughout the day, so an afternoon measurement gives you a more realistic size for everyday wear. If you're buying athletic shoes, you might also want to account for a bit of extra room at the toe, about a thumb's width, for comfort during activity.

Sometimes a quick real-world example is easier to follow than a chart. Here are some of the most common conversion scenarios people run into.

• US Women's 8 to EU: This converts to approximately EU 39. If you're ordering from a European brand and they don't carry 39, size up to 40 rather than down.
• US Men's 10 to UK: A US men's 10 is a UK 9.5. Many UK brands do carry half sizes, so this one usually translates cleanly.
• EU 42 to US: For men, EU 42 is a US 9. For women, EU 42 is closer to a US 11.
• 26 cm to US size: A 26 cm foot length is roughly a US men's 8 or a US women's 9 to 9.5.
• UK Women's 5 to US: UK women's 5 converts to US women's 7. This is a common one for shoppers browsing British fashion brands.
• US Men's 13 to EU: EU 46 is the standard conversion, though some brands label this as 47 depending on their internal sizing.

When you run into a conversion that lands between sizes, the safest bet is to go up, especially for closed-toe shoes or athletic footwear where a tight fit causes real discomfort quickly. For sandals or open-toe styles, sizing down a half step is usually fine.