Convert Mach Number to Speed Of Light

Enter the Mach number below to convert the speed to speed of light.

Results in Speed Of Light: Mach 1 = 1.1441E-6 c

How to Convert Mach Number to Speed Of Light To convert a Mach measurement to a speed of light measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 1.1441E-6 speed of light, so use this simple formula to convert:

speed of light = Mach number × 1.1441E-6

The speed in speed of light is equal to the Mach number multiplied by 1.1441E-6.

For example, here's how to convert Mach 2 to speed of light using the formula above.
Mach 2 = (2 × 1.1441E-6) = 2.2882E-6 c

Mach number and speed of light 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

Speed Of Light

The speed of light is equal to exactly 299,792,458 meters per second, or 670,616,629 miles per hour.

Speed of light can be abbreviated as c, for example 1 speed of light can be written as 1 c.

Mach Measurements and Equivalent Speed Of Light Conversions

Common Mach values converted to the equivalent speed of light value
Mach Number Speed Of Light
Mach 1 0.0000011441 c
Mach 2 0.0000022882 c
Mach 3 0.0000034324 c
Mach 4 0.0000045765 c
Mach 5 0.0000057206 c
Mach 6 0.0000068647 c
Mach 7 0.0000080089 c
Mach 8 0.000009153 c
Mach 9 0.000010297 c
Mach 10 0.000011441 c
Mach 11 0.000012585 c
Mach 12 0.000013729 c
Mach 13 0.000014874 c
Mach 14 0.000016018 c
Mach 15 0.000017162 c
Mach 16 0.000018306 c
Mach 17 0.00001945 c
Mach 18 0.000020594 c
Mach 19 0.000021738 c
Mach 20 0.000022882 c
Mach 21 0.000024027 c
Mach 22 0.000025171 c
Mach 23 0.000026315 c
Mach 24 0.000027459 c
Mach 25 0.000028603 c
Mach 26 0.000029747 c
Mach 27 0.000030891 c
Mach 28 0.000032035 c
Mach 29 0.00003318 c
Mach 30 0.000034324 c
Mach 31 0.000035468 c
Mach 32 0.000036612 c
Mach 33 0.000037756 c
Mach 34 0.0000389 c
Mach 35 0.000040044 c
Mach 36 0.000041188 c
Mach 37 0.000042333 c
Mach 38 0.000043477 c
Mach 39 0.000044621 c
Mach 40 0.000045765 c

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 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 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