What is mile per hour?

Mile per hour is a unit of speed equal to one mile travelled in one hour. It is the standard unit for road speeds, vehicle performance ratings, and weather reports in the United States and United Kingdom.

What is mach (approx at sea level)?

Mach is a dimensionless speed unit expressing the ratio of an object’s speed to the local speed of sound. At sea level, Mach 1 is approximately 343 m/s. It is used in aviation and aerodynamics to characterise high-speed flight regimes.

Worked examples

1 mile per hour = 0.0013137 mach (approx at sea level)

1 mach (approx at sea level) = 340.29 metre per second

More Speed conversions

• Convert mile per hour to metre per second
• Convert mile per hour to kilometre per hour
• Convert mile per hour to knot
• Convert mile per hour to foot per second
• Convert mile per hour to metre per minute
• Convert mile per hour to kilometre per second
• Convert mile per hour to mach (approx at sea level)
• Convert mile per hour to centimetre per second
• Convert mile per hour to mile per minute

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).