Convert Mach to Kilometers Per Second

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

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Mach 1 = 0.343 km/s

How to Convert Mach to Kilometers Per Second

Speedometers are used in vehicles to measure speed

To convert a Mach measurement to a kilometer per second measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 0.343 kilometers per second, so use this simple formula to convert:

kilometers per second = Mach number × 0.343

The speed in kilometers per second is equal to the Mach number multiplied by 0.343.

For example, here's how to convert Mach 2 to kilometers per second using the formula above.
Mach 2 = (2 × 0.343) = 0.686 km/s

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

Mach

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 Second

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

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

Kilometers per second can be expressed using the formula:
vkm/s = dkmtsec

The velocity in kilometers per second is equal to the distance in kilometers divided by time in seconds.

Mach Measurements and Equivalent Kilometer Per Second Conversions

Common Mach values converted to the equivalent kilometer per second value
Mach Kilometers Per Second
Mach 1 0.343 km/s
Mach 2 0.686 km/s
Mach 3 1.029 km/s
Mach 4 1.372 km/s
Mach 5 1.715 km/s
Mach 6 2.058 km/s
Mach 7 2.401 km/s
Mach 8 2.744 km/s
Mach 9 3.087 km/s
Mach 10 3.43 km/s
Mach 11 3.773 km/s
Mach 12 4.116 km/s
Mach 13 4.459 km/s
Mach 14 4.802 km/s
Mach 15 5.145 km/s
Mach 16 5.488 km/s
Mach 17 5.831 km/s
Mach 18 6.174 km/s
Mach 19 6.517 km/s
Mach 20 6.86 km/s
Mach 21 7.203 km/s
Mach 22 7.546 km/s
Mach 23 7.889 km/s
Mach 24 8.232 km/s
Mach 25 8.575 km/s
Mach 26 8.918 km/s
Mach 27 9.261 km/s
Mach 28 9.604 km/s
Mach 29 9.947 km/s
Mach 30 10.29 km/s
Mach 31 10.63 km/s
Mach 32 10.98 km/s
Mach 33 11.32 km/s
Mach 34 11.66 km/s
Mach 35 12.01 km/s
Mach 36 12.35 km/s
Mach 37 12.69 km/s
Mach 38 13.03 km/s
Mach 39 13.38 km/s
Mach 40 13.72 km/s

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 Hour
Mach 1 is equal to 1,234.8 kilometers per hour
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