Speed Converter
Convert between different speed units including km/h, mph, m/s, knots, and Mach.
Kilometers per hour (km/h)100
Miles per hour (mph)62.137274
Meters per second (m/s)27.777778
Feet per second (ft/s)91.134442
Knots (kn)53.99568
Mach0.081627
Speed Unit Reference
- km/h: Standard unit in most countries
- mph: Used in USA, UK, and some other countries
- m/s: SI unit for speed
- knots: Used in aviation and maritime
- Mach: Ratio of speed to the speed of sound