Instant conversion

Why clothing sizes differ around the world

There's no international standard for clothing sizes, which is why a size 8 in the US is a size 12 in the UK and a size 38 in Europe. Each region developed its own sizing system independently, and fashion brands often size things differently within those systems too.

This matters most when shopping internationally — especially online. Ordering from a Korean fashion site, a UK brand, or a European designer without converting your size first is a common and expensive mistake. This tool takes the guesswork out of it.

New to this? Here's why you might need it

If you've ever ordered clothes online from another country and received something that didn't fit at all — this is why. A US size 6 dress and a UK size 6 dress are not the same garment. The UK size 6 is actually closer to a US size 2.

Asian sizing (used by many Korean and Japanese fashion brands popular on sites like SHEIN, YesStyle, and Yesstyle) often runs 1-2 sizes smaller than US sizing. Converting before you buy saves returns, frustration, and money.

Frequently Asked Questions

Why don't sizes match exactly between brands?
Even within the same country, brands use different fit standards. "Vanity sizing" — where brands label sizes smaller than they actually are — is common. Always check a brand's specific size chart when available.
What does "Asian sizing" mean?
Asian sizing refers to the sizing system used by many Korean and Japanese clothing brands. It's based on body measurements in centimeters and typically runs smaller than US or EU sizes. A US size medium might be an Asian size XL.
Is EU sizing the same across Europe?
Generally yes — EU sizing is fairly consistent across France, Germany, Italy, and other European countries, though minor variations exist between brands. EU sizes are based on body measurements in centimeters.
Should I size up or down when unsure?
When between sizes, it depends on the garment. For tops and dresses, size up for comfort. For pants and skirts, size up if you're between sizes. You can always have clothing taken in, but you can't add fabric.