EU to US Shoe Size Converter

The thing that trips most people up is that one EU number gives you two different US answers. EU sizing is unisex - the number describes foot length and nothing else - but the US splits its scale into separate women's and men's ranges. So when you read EU 39 off a box, the matching US size is roughly women's 8.5 but only about men's 6.5. Move up to EU 42 and the same split shows: that's around men's 9 yet closer to women's 10.5. The EU figure hasn't changed - the foot is the same length - but the US label depends entirely on which scale you map it against.

The reason is simply that US women's sizes run about 1.5 steps higher than US men's for the same foot, so a single EU number lands in two places at once. That is why the gender tab on the converter above matters more than the size value itself: pick the wrong tab and you can be a full size and a half out. Always confirm whether a chart is quoting men's or women's US before you trust the number. For the underlying mechanics of the Paris-point scale and how it's built, see our full guide to EU shoe sizes.

You'll often see an EU size convert to something like "US 8 to 8.5" rather than a single clean number. This happens because the two systems count in different increments. An EU whole step is two-thirds of a centimetre, while a US half-size step is smaller than that - so the boundaries never line up. The practical result is that one EU number frequently falls between two US sizes instead of landing squarely on one. It isn't an error in the chart; it's the honest answer when two scales don't share a common ruler.

When a size sits in that in-between zone, the safer move is to size up rather than down. A shoe that is marginally long can be managed with a thicker sock or an insole, whereas one that is half a size too short has nowhere to go and tends to pinch across the toes. If you're between US 8 and 8.5, in other words, reach for the 8.5. The exception is a style you know runs generous - in that case the smaller end of the range is often the better fit. Either way, treat the converter's number as a starting point and let the foot-length column be the tie-breaker.

If you buy from European labels - or pick up EU-labelled stock from a global brand - the box and the listing will usually quote the EU number only, with no US equivalent printed anywhere. That is exactly the moment this page earns its keep: convert the EU size to US first, then sanity-check it against the gender that applies to you. Plenty of returns happen simply because a shopper assumed a single EU figure mapped to one universal US size, when in fact it splits in two.

When a listing shows EU sizes and nothing else, skip the guesswork and measure your foot in centimetres, then read straight off the foot-length column in the chart above - that measurement is the one anchor every system agrees on. It's also worth opening the retailer's own size chart, because lasts differ between makers and a brand that runs narrow or short will say so there. A two-minute measurement plus a glance at the product chart is far cheaper than shipping a parcel back across an ocean.