Mach (Ma)
The mach is a unit of speed, used for supersonic aviation, rocket engineering, and aerodynamics research. Its symbol is Ma.
Ma
km/h
1 mach equals
| Kilometers per Hour | 1,234.8 km/h |
| Miles per Hour | 767.269 mph |
| Meters per Second | 343 m/s |
About the mach
The Mach number was named after Austrian physicist Ernst Mach in 1929. It represents the ratio of an object's speed to the local speed of sound.
In everyday use the mach appears in supersonic aviation, rocket engineering, and aerodynamics research. As a point of reference: the Concorde cruised at Mach 2.04, about 2,180 km/h.