Conversion Formula
$$v_{\text{mph}} = v_{\text{km/h}} \times 0.621371$$
Multiply km/h by 0.621371 to get mph.
km/h to mph Conversion Table
| Kilometer per Hour (km/h) | Mile per Hour (mph) |
|---|---|
| 0.1 | 0.0621372 |
| 0.5 | 0.310686 |
| 1 | 0.621372 |
| 2 | 1.24274 |
| 5 | 3.10686 |
| 10 | 6.21372 |
| 25 | 15.5343 |
| 50 | 31.0686 |
| 100 | 62.1372 |
| 250 | 155.343 |
| 500 | 310.686 |
| 1,000 | 621.372 |
km/h to mph in Engineering
Velocity conversions are essential for fluid mechanics, transportation engineering, wind load calculations, and aerodynamics. Flow velocity in pipes (ft/s, m/s) connects directly to pressure drop and head loss calculations.
Kilometer per Hour: Standard metric unit for vehicle speed, wind speed, and transportation engineering outside the US.
Mile per Hour: Standard US unit for vehicle speed, wind speed (in weather), and transportation engineering.