Convert Mach Number to Kilometers Per Hour

Enter the Mach number below to convert the speed to kilometers per hour.

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Mach 1 = 1,234.8 km/h

How to Convert Mach Number to Kilometers Per Hour

conversion scale showing Mach number and equivalent kilometers per hour speed values

To convert a Mach measurement to a kilometer per hour measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 1,234.8 kilometers per hour, so use this simple formula to convert:

kilometers per hour = Mach number × 1,234.8

The speed in kilometers per hour is equal to the Mach number multiplied by 1,234.8.

For example, here's how to convert Mach 2 to kilometers per hour using the formula above.
Mach 2 = (2 × 1,234.8) = 2,469.6 km/h

Mach number and kilometers per hour are both units used to measure speed. Keep reading to learn more about each unit of measure.

Mach Number

Mach, sometimes also referred to as a Mach number, is the ratio of the speed of an object to the speed of sound.

Mach can be abbreviated as M, and is also sometimes abbreviated as Ma. For example, Mach 1 can be written as 1 M or 1 Ma.

Although Mach can be abbreviated M or Ma, the Mach number is typically expressed with the number after the unit name. For example, the expression Mach 3 is preferred rather than 3 Machs or 3 M.

The speed is classified as either subsonic, transonic, supersonic, or hypersonic depending on the Mach number.

Speed classifications for various mach numbers.
Speed Classification Mach Number
Subsonic Mach < 1.0
Transonic Mach = 1.0
Supersonic Mach > 1.0
Hypersonic Mach > 5.0

Kilometers Per Hour

Kilometers per hour are a measurement of speed expressing the distance travelled in kilometers in one hour.

The kilometer per hour, or kilometre per hour, is an SI unit of speed in the metric system. Kilometers per hour can be abbreviated as km/h, and are also sometimes abbreviated as kph. For example, 1 kilometer per hour can be written as 1 km/h or 1 kph.

Kilometers per hour can be expressed using the formula:
vkm/s = dkmthr

The velocity in kilometers per hour is equal to the distance in kilometers divided by time in hours.

Mach Measurements and Equivalent Kilometer Per Hour Conversions

Common Mach values converted to the equivalent kilometer per hour value
Mach Number Kilometers Per Hour
Mach 1 1,235 km/h
Mach 2 2,470 km/h
Mach 3 3,704 km/h
Mach 4 4,939 km/h
Mach 5 6,174 km/h
Mach 6 7,409 km/h
Mach 7 8,644 km/h
Mach 8 9,878 km/h
Mach 9 11,113 km/h
Mach 10 12,348 km/h
Mach 11 13,583 km/h
Mach 12 14,818 km/h
Mach 13 16,052 km/h
Mach 14 17,287 km/h
Mach 15 18,522 km/h
Mach 16 19,757 km/h
Mach 17 20,992 km/h
Mach 18 22,226 km/h
Mach 19 23,461 km/h
Mach 20 24,696 km/h
Mach 21 25,931 km/h
Mach 22 27,166 km/h
Mach 23 28,400 km/h
Mach 24 29,635 km/h
Mach 25 30,870 km/h
Mach 26 32,105 km/h
Mach 27 33,340 km/h
Mach 28 34,574 km/h
Mach 29 35,809 km/h
Mach 30 37,044 km/h
Mach 31 38,279 km/h
Mach 32 39,514 km/h
Mach 33 40,748 km/h
Mach 34 41,983 km/h
Mach 35 43,218 km/h
Mach 36 44,453 km/h
Mach 37 45,688 km/h
Mach 38 46,922 km/h
Mach 39 48,157 km/h
Mach 40 49,392 km/h

More Mach Speed Conversions

Convert to Knots
Mach 1 is equal to 666.738661 knots
Convert to Speed Of Sound
Mach 1 is equal to 1 speed of sound
Convert to Speed Of Light
Mach 1 is equal to 1.1441E-6 speed of light
Convert to Miles Per Hour
Mach 1 is equal to 767.269148 miles per hour
Convert to Feet Per Second
Mach 1 is equal to 1,125.33 feet per second
Convert to Kilometers Per Second
Mach 1 is equal to 0.343 kilometers per second
Convert to Meters Per Second
Mach 1 is equal to 343 meters per second
Convert to Centimeters Per Second
Mach 1 is equal to 34,300 centimeters per second