Convert Mach (20°C, 1 atm) (Ma (20°C)) to Meter/Hour (m/h) instantly.
About these units
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.
Meter/Hour (m/h)
A meter per hour is an extremely slow speed, corresponding to the distance of a single meter traveled over a 60-minute period. This unit is rarely encountered in daily life but is useful in engineering contexts where mechanical motion is very slow—such as conveyor systems, slow-moving robotics, geological creep, or precision laboratory instruments. Environmental sciences also use m/h to describe gradual natural processes like glacier movement or soil displacement. The unit highlights the diversity of real-world velocities—from near-light-speed phenomena to movements almost imperceptibly slow.