Korea to US Men's Shoe Size Conversion
| Korea (mm) | US |
|---|---|
| 250 | 7 |
| 255 | 7.5 |
| 260 | 8 |
| 265 | 8.5 |
| 270 | 9 |
| 275 | 9.5 |
| 280 | 10 |
| 285 | 10.5 |
| 290 | 11 |
| 295 | 11.5 |
| 300 | 12 |
Sizing conventions vary by brand and by cut — this table shows the standard published conversion. Always check the garment's own size chart when one is available. See how these tables are compiled.
A Korean 270mm men's shoe converts to a US 9 on the standard chart, and the Korean scale runs in 5mm steps across the men's range shown here (250mm to 300mm), each step corresponding to one US half-size.
If you already know your foot length in millimetres from a Korean retailer's chart, that figure is more reliable for buying from a Korean brand than converting a US size backwards into millimetres, since the US size assumes an average foot shape the Korean length measurement doesn't need to.
Frequently asked questions
How precise is a Korean-to-US shoe size conversion?
As precise as the 5mm step allows — a 270mm shoe reads as a US 9, but a foot at 272mm sits between two US sizes with no exact match on the standard table.