Korean shoe size conversion usually begins with the KR number in millimeters: KR 250 means a 250 mm size label, not US size 25. Use the table below only as a practical Nike Korea example, then open the exact brand’s chart. The same KR millimeter label can map to more than one half size in some charts, and fit changes by model, width, toe shape, and sock thickness.
Start with foot length in millimeters
Use Nike Korea footwear size chart with KR millimeters or the seller’s current brand chart after measuring the foot in millimeters. Korean shoe labels commonly use millimeter sizes, but the same nominal length can fit differently by brand and style.
- Nike Korea footwear size chart with KR millimeters
- Nike Korea women’s chart
- Nike Korea kids’ chart
- VISITKOREA
- Nike guide to measuring foot length
Measure both feet and check the exact model
Measure both feet while standing, note width and usual sock thickness, identify the exact model, and read the store’s try-on, return, and exchange conditions.
- Measured foot length in millimeters
- Brand and product type
- Left and right foot difference
- Return or exchange terms
This selected table follows the relationships displayed in the Nike Korea men’s footwear chart, which also shows corresponding women’s, UK, and EU sizes. It is not a universal Korean retail standard and should not replace the product page. Ranges appear where Nike’s chart shows two half sizes under the same KR millimeter label.
International size systems do not move in identical increments. A brand can place two US half sizes against one KR millimeter label, while EU steps follow another sequence. That is why a converter that returns one universal answer can be misleading. When a Korean product page lists only 235 or 240, look for the brand chart linked from that product, then check whether the model is men’s, women’s, unisex, junior, or a Korea-specific release.
Use the brand chart and test the fit
- Trace or measure both feet from heel to longest toe in millimeters and use the larger measurement.
- Open the exact brand and model chart rather than relying only on a general KR-to-US, UK, or EU conversion.
- Allow for width, toe shape, socks, insoles, and whether the shoe is for walking, sport, or dress use.
- Try both shoes and walk indoors where permitted, checking heel slip, toe room, and pressure points.
- Keep the receipt and packaging until the fit is confirmed under the seller’s return or exchange rule.
The converted size is only a comparison
The millimeter measurement is the strongest starting point, while the converted US, UK, or EU number is only a comparison. The exact model and actual fit decide the purchase.
| Trip detail | Why it matters |
|---|---|
| Millimeter length | Measure both feet and begin with the larger value |
| Brand chart | The exact model can differ from a general conversion |
| Width and use | Last shape, socks, and activity change the fit |
| Try-on or return | Use the seller’s conditions when fit cannot be confirmed |
For korean shoe size conversion, size conversion cannot predict width or model-specific fit; use the brand chart and a try-on or return option when possible.
If the measurement falls between two sizes
Compare the brand’s width and fit notes and try both sizes when possible; do not assume that sizing up always fixes a narrow or differently shaped last.
Choose the option with a workable exchange or return path when the shoe cannot be tried on before purchase.
Related guides
- Korean clothing size guide
- Korea shirt size guide
- Korean Websites That Reject Foreign Cards: What Tourists Should Do
Current official measurement boundary
This owner begins with both feet measured under the intended use conditions, then uses the exact model and brand chart. It does not treat KR millimeters, box CM, foot length, US, UK and EU labels as universally interchangeable. ISO 19407:2023 describes conversion tables as guidance based on foot length; ISO 9407:2019 defines the Mondopoint approach; Nike Korea’s current men’s chart explicitly distinguishes marked CM from foot length, while adidas Korea directs shoppers to the exact product or category chart and notes material and design differences.