Home›Blog›Men's vs Women's Shoe Sizing

Men's vs Women's Shoe Sizing: What's the Difference?

6 min read  ·  Sizing guides

Men's and women's shoe sizes are different numbering systems for the same physical feet. A women's US 8 and a men's US 8 are not the same size — they refer to different foot lengths. If you've ever bought a pair of "unisex" sneakers and wondered why the fit felt completely off, this is almost certainly the reason.

Understanding how the two systems relate is useful any time you're buying unisex styles, shopping across gender lines or converting into EU or UK sizes — because those conversions depend entirely on which system you start from.

The 1.5-Size Rule

The simplest way to understand the gap: women's US sizes run approximately 1.5 sizes larger than men's for the same foot length. So a women's US 8 is roughly the same foot as a men's US 6.5. A women's US 10 is close to a men's US 8.5.

This means that if you're a woman buying a men's shoe (which is common — men's styles are often cheaper or come in colourways not offered in women's), you need to go down 1.5 sizes from your normal women's size. If you're a men's US 9, and you want to buy a women's shoe, you'd look for a women's US 10.5.

The 1.5-size difference is a consistent rule across US sizing, though some brands round it slightly differently, so always double-check against the brand's own size chart.

Why Are They Different at All?

The US shoe sizing system developed separately for men and women, partly because shoe manufacturing historically used different lasts (the shaped forms that shoes are built around) for each gender, and partly because women's fashion sizing in the US has always been on a different numbering scale from men's. There's no deeply logical reason for the gap — it's a historical convention that stuck.

European sizing doesn't have this problem. EU sizes run on a single continuous scale based on the Paris Point system, where one size equals two-thirds of a centimetre. EU 42 means EU 42 for everyone — the conversion to US or UK is what differs by gender, not the EU number itself. This is one reason CM and EU sizing are genuinely more useful as a reference point when shopping internationally.

Width Differences Between Men's and Women's Lasts

It's not just the length that differs. Women's shoes are typically built on a narrower last than men's — the heel is narrower, the toe box may be more tapered and the overall volume of the shoe is lower. This matters for fit more than most people realise.

If you're a woman with wider feet buying a men's shoe, you may find the fit is actually more comfortable than a women's style of the same length — because the men's last is built for a wider foot. Conversely, men with narrow feet sometimes find women's styles fit them better, despite the number on the tag being different.

UK Sizing and the Gender Gap

UK sizing works similarly to US sizing but on a different number scale — and it has the same gender gap, though the offset is slightly different. UK women's sizes run approximately 2 sizes larger than UK men's for the same foot length. So a women's UK 6 is roughly the same foot as a men's UK 4.

This makes cross-referencing US, UK and EU sizes more complicated than it looks at first — because you can't just add or subtract a fixed number without knowing whether you're working from men's or women's sizing.

Unisex Sizing: How It Works

When a brand labels a shoe as "unisex," it almost always means the shoe is sized on a men's scale. Nike, Adidas, Converse and Vans all follow this convention for their unisex styles.

So if you're a woman buying a unisex Nike or pair of Chuck Taylors, you subtract 1.5 from your women's US size to find your size in the unisex (men's) scale. A women's US 8 becomes a unisex/men's 6.5. A women's US 9 becomes a unisex 7.5.

Converse is a partial exception: Converse lists both men's and women's sizes on their sizing guide for the same shoe, and because Converse already runs large, women typically end up going two full sizes down from their normal women's size. A women's US 8 in most brands is usually a Converse 6 or 6.5.

Quick Reference: Women's US to Men's US

Convert between men's and women's sizes — and into EU, UK, CM and Korean sizing — instantly with the SneakerFrenzy converter. Just select your gender tab, pick your size system and choose your size.

Open the size converter →

Does Gender Sizing Matter When Buying Online?

Yes, more than most people expect. The most common mistake people make when buying unisex sneakers — particularly on resale platforms like StockX, GOAT or Depop — is assuming the listed size is in the same system they normally use. Most resale listings default to men's sizing, which means women need to do the 1.5-size adjustment before buying.

StockX does allow you to filter by gender and converts displayed sizes accordingly, but other platforms don't. If you're buying from a private seller or an international marketplace, always confirm whether the listed size is men's or women's before placing the order.

Korean sizing sidesteps this entirely, since KR sizing is based on foot length in millimetres and the same number applies regardless of gender. If you know your KR size (e.g. KR 250), you can use it on any Korean resale platform without worrying about gender conversion.

Disclaimer: Sizing conventions vary between brands. The 1.5-size offset is a guideline — check the brand's own chart for the most accurate conversion.