What KoreanSizes does
KoreanSizes offers five free converters that turn Korean sizes into US sizes and back: shoes (Korean mm to US men's, women's and kids' sizes, plus EU and UK), women's clothing (44–88 to US 0–16 and XS–XL), men's clothing (Korean 90, 95, 100, 105 and 110 to US letter sizes, with chest in inches), ring sizes (Korean 호 to US and EU ring sizes) and kids' clothing (Korean height-based cm sizes to US toddler and kids sizes).
Each tool page has an instant converter that runs in your browser, a complete table, a plain-language explanation of how the system works and how to measure, and a short FAQ.
Who it is for
The English pages are for shoppers outside Korea who buy Korean fashion, sneakers or jewellery online and need US equivalents. The Korean pages are written separately for Koreans living in the US who know their Korean size and shop US brands, or occasionally order from home the other way round.
How the tables are built
No brand's size chart is copied here. Every table starts from public standards and generic conversion data: the Korean national standards (KS) behind clothing and shoe labels, the Mondopoint foot-length system and the common relationships between US, EU and UK scales. Formula-based conversions, such as US men's shoe size = (mm − 180) ÷ 10, are computed from the formula, which is printed on the page.
Since most garments have more than one convention, each table states the one it follows, so you can see why a seller's chart might read half a size differently.
Independent, and clear about limits
KoreanSizes is not affiliated with, sponsored by or endorsed by any brand, retailer or marketplace, and no value is adjusted to favour a seller.
Sizes vary by brand. A chart tells you where to start; the seller's own size chart and measured (실측) figures have the final say.
To keep the site free we may show advertisements later. Ads will not change any number in the tables.
Found an error?
If a conversion looks wrong or a common size is missing, tell us through the Contact page with the page name, the Korean size and your measurement, and we will check it against the source data.