m/s to km/h Converter
Convert SI velocity (m/s) to road speed (km/h) instantly. Features a history tape and copy-to-clipboard for students and engineers.
Recent Calculations
About
Converting between the scientific standard m/s (meters per second) and the everyday road standard km/h (kilometers per hour) is a frequent task for physics students, automotive engineers, and aerodynamicists. While SI units are essential for calculation consistency in formulas like Kinetic Energy (12mv2), they often lack intuitive context for real-world speed. 30 m/s might sound slow, but it equates to highway speeds.
This tool facilitates rapid comparison and data logging. Unlike basic calculators, it handles the conversion factor of 3.6 with precision and provides a history of recent calculations, allowing users to compare wind speeds or vehicle velocities without re-entering data. Accuracy here prevents misconceptions about magnitude, particularly in safety-critical calculations like stopping distances.
Formulas
The relationship involves converting seconds to hours and meters to kilometers simultaneously.
Conversely, to find meters per second from kilometers per hour:
Reference Data
| Entity | Speed (m/s) | Speed (km/h) | Note |
|---|---|---|---|
| Human Walking | 1.4 | 5 | Average pace |
| Usain Bolt (Peak) | 12.4 | 44.72 | World Record pace |
| Urban Speed Limit | 13.9 | 50 | Standard city limit |
| Highway Speed | 27.8 | 100 | Typical motorway limit |
| Hurricane (Cat 1) | 33 | 119 | Minimum sustained wind |
| Formula 1 Car | 100 | 360 | Top speed range |
| Speed of Sound | 343 | 1235 | Mach 1 at sea level |
| Bullet (Rifle) | 900 | 3240 | Approximate muzzle velocity |