Convert Kilometer/Minute (km/min) to Mach (20°C, 1 atm) (Ma (20°C)) instantly.
About these units
Kilometer/Minute (km/min)
A kilometer per minute corresponds to 60 km/h per unit, making it a useful measure for high-speed trains, rockets, and conceptual velocity comparisons. It is too fast for normal transportation but too slow for astrophysical use, placing it in a niche area: intermediate high-speed phenomena. Engineers may use km/min to quickly estimate travel times or evaluate rapid mechanical processes. It offers a convenient stepping stone between km/h and km/s.
Mach (20°C, 1 atm) (Ma (20°C))
At 20°C and 1 atmosphere, the speed of sound in air is about 343 m/s, making Mach 1 = 343 m/s under those conditions. Mach numbers classify aerodynamic regimes: Mach 0.3–0.8 (Subsonic), Mach 0.8–1.2 (Transonic), Mach 1–5 (Supersonic), Mach 5+ (Hypersonic). Temperature influences Mach speed significantly; colder air slows sound, while warmer air increases its speed. Aircraft design, jet engines, wind tunnels, aerospace testing, and atmospheric re-entry physics all rely heavily on Mach numbers referenced to standard conditions.