Convert mile/hour to Mach (SI standard)
Please provide values below to convert mile/hour [mi/h] to Mach (SI standard) [M (SI)], or Convert Mach (SI standard) to mile/hour.
How to Convert Mile/hour to Mach (Si Standard)
1 mi/h = 0.00151436314363144 M (SI)
Example: convert 15 mi/h to M (SI):
15 mi/h = 15 × 0.00151436314363144 M (SI) = 0.0227154471544715 M (SI)
Mile/hour to Mach (Si Standard) Conversion Table
| mile/hour | Mach (SI standard) |
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Mile/hour
Mile per hour (mi/h) is a unit of speed representing the number of miles traveled in one hour.
History/Origin
The mile per hour has been used primarily in the United States and the United Kingdom for measuring speed, especially in transportation, since the adoption of the imperial system. Its usage dates back to the widespread use of miles as a distance measure before metric standardization.
Current Use
Today, mi/h is commonly used in the United States and some other countries to express vehicle speeds, speed limits, and other transportation-related velocities. It remains a standard unit in contexts where the imperial system is prevalent.
Mach (Si Standard)
The Mach number is a dimensionless unit representing the ratio of an object's speed to the speed of sound in the surrounding medium.
History/Origin
Named after the Austrian physicist Ernst Mach, the Mach number was introduced in the early 20th century to describe supersonic and hypersonic speeds, initially used in aerodynamics and fluid dynamics research.
Current Use
The Mach number is widely used in aeronautics and astronautics to specify aircraft and spacecraft speeds relative to the local speed of sound, especially in high-speed flight regimes.