How to convert miles per hour to mach
To convert a measurement in miles per hour to mach, multiply the value by 0.001313703018. The conversion factor comes from the relationship between both units and the meter per second.
For example, to convert 5 mph to mach: 5 × 0.001313703018 = 0.00656851509 Ma.
What is a mile per hour?
The mile per hour is an imperial unit of speed equal to one mile traveled in one hour, or exactly 0.44704 meters per second. Mph remains the standard for road speed in the United States and United Kingdom, a legacy of the imperial mile that predates widespread metric adoption elsewhere.
Common uses of miles per hour include: Road speed limits in the US and UK; Vehicle speedometers in imperial countries; Wind and storm speed reporting (US); Baseball pitch and sports speeds.
What is a mach?
Mach is the ratio of an object's speed to the local speed of sound. Mach 1 at sea level and 15°C is about 340.29 meters per second. Named after physicist Ernst Mach, the Mach number became essential in aeronautics as aircraft approached and exceeded the speed of sound in the mid-20th century.
Common uses of mach include: Aircraft and jet speed ratings; Aerodynamics and wind-tunnel testing; Supersonic and hypersonic research; Missile and projectile speed specs.
Miles per hour to mach worked examples
Here are some common values converted:
1 mph = 0.001313703018 Ma 5 mph = 0.00656851509 Ma 10 mph = 0.01313703018 Ma 50 mph = 0.065685150901 Ma 100 mph = 0.131370301801 Ma
Frequently asked questions
How many mach are in one mile per hour?
One mile per hour (mph) equals 0.001313703018 mach (Ma). Multiply any value in miles per hour by 0.001313703018 to convert to mach.
How do I convert miles per hour to mach?
Multiply the value in miles per hour by 0.001313703018. For example, 5 mph × 0.001313703018 = 0.00656851509 Ma.
How do I convert mach to miles per hour?
Multiply the value in mach by 761.207051, or divide by 0.001313703018. Use the swap button on the converter above to reverse the direction.
Is the mile per hour to mach conversion exact?
Conversions between m/s, km/h, mph, knots and ft/s are exact by definition. Mach uses the speed of sound at sea level and 15°C (340.29 m/s), which varies with temperature and altitude.
What is the formula for miles per hour to mach?
The formula is: Ma = mph × 0.001313703018. This comes from the definition of both units relative to the meter per second.