Shoe Size Converter
Last updated: 2026-06-25
The shoe size converter finds the closest size in a standard US/UK/EU/Korean (mm) chart and shows all four systems on one line. Men's and women's US sizes differ, so pick a gender first.
Example: men's Korean 270 mm = US 9 = UK 8 = EU 42.5.
Enter a shoe size
Results (closest size)
| System | Size |
|---|
Based on a standard conversion chart; actual fit can vary by brand, shoe type and width.
How to use
- Pick a gender — Choose men's or women's shoes.
- Pick a system and enter a value — Choose the system you know (US, UK, EU or Korean mm) and enter the value.
- Read the results — The chart finds the closest size and shows US, UK, EU and Korean (mm) on one line.
US and Korean mm shoe size charts
Korea states foot length in millimeters (the Mondopoint system), the US and UK use inch-based numbers, and Europe uses Paris points (about 6.67 mm). There is no clean formula between them, so a standard lookup chart is the most reliable match. Below are the most widely used charts.
| Korean (mm) | US | UK | EU |
|---|---|---|---|
| 240 | 6 | 5 | 38.5 |
| 250 | 7 | 6 | 40 |
| 260 | 8 | 7 | 41 |
| 270 | 9 | 8 | 42.5 |
| 280 | 10 | 9 | 44 |
| 290 | 11 | 10 | 45 |
| Korean (mm) | US | UK | EU |
|---|---|---|---|
| 220 | 5 | 2.5 | 35 |
| 230 | 6 | 3.5 | 36 |
| 240 | 7 | 4.5 | 37.5 |
| 250 | 8 | 5.5 | 38.5 |
| 255 | 8.5 | 6 | 39 |
| 260 | 9 | 6.5 | 40 |
Measure your foot length, add 5-10 mm of room and pick your Korean (mm) size. To convert a length into mm, cm or inches, use the length converter. More tips are in the conversion guide.
Frequently asked questions (FAQ)
What is Korean 270 mm in US shoe size?
For men, Korean 270 mm is US 9, UK 8 and EU 42.5. Korean sizes state the foot length in mm (the Mondopoint system), which is intuitive.
Are US shoe sizes different for men and women?
Yes. The same US 8 has a different foot length for men and women. A women's US size is usually about 1.5 larger than a men's US size for the same foot length, so always pick a gender first.
How do I pick a size from my foot length?
Measure from your heel to your longest toe in mm, add about 5-10 mm of room and use that as your Korean (mm) size. Enter that mm value here to see the matching US, UK and EU sizes.
Why do sizes vary slightly by brand?
This is a standard conversion chart, but real fit depends on the brand, shoe type (sneakers, dress shoes, boots) and width. Use the chart as a guide and also check the size guide of the brand you usually wear.
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Last updated: 2026-06-25