# Convert kph to mach

Swap conversion: mach to kph

## Facts and Curiosities

Kilometer per hour is a measure of speed, typically used in countries that use the metric system. In these countries, road speed limits are calculated in kilometers per hour, which is abbreviated as kph or km/h. As its name implies, this unit represents the distance (in kilometers) traveled by an object for one hour. This measure is usually an average, that is, if a car traveled the distance of 210 km between two cities and to take this route, it took an hour and a half, so we will get a speed of 140 kilometers per hour (140 km/h). This does not obviously mean that the car has constantly shifted at this speed, there may be parts of the route on which it has been faster and parts where it has circulated more slowly.

Mach is a velocity measure defined as the ratio of an object's velocity to the speed of sound. In other words, the Mach speed corresponds to the number of times an object has reached the speed of sound. The speed of sound is not constant and depends on the medium where the sound is propagated. In the Earth's atmosphere, if we take into account a temperature of approximately 15 degrees Celsius, the speed of sound is 1225 km/h. This is the reference measure used by the Mach speed, and thus, Mach 1 corresponds to exactly that value. The air force has combat aircraft with speeds several times higher than the speed of sound, they are the so-called supersonic planes. Most of them can fly at a speed equal to or greater than Mach 4, that is, four times the speed of sound. There are already some projects for the construction of airplanes that can reach the surprising speed of Mach 20.

## Math Formula

Mach=(kph)/1225.044

## Conversion Examples

kph to mach kph to mach
5 kph = 0,0041 Mach 60 kph = 0,0490 Mach
10 kph = 0,0082 Mach 70 kph = 0,0571 Mach
15 kph = 0,0122 Mach 80 kph = 0,0653 Mach
20 kph = 0,0163 Mach 90 kph = 0,0735 Mach
25 kph = 0,0204 Mach 100 kph = 0,0816 Mach
30 kph = 0,0245 Mach 500 kph = 0,4081 Mach
35 kph = 0,0286 Mach 1000 kph = 0,8163 Mach
40 kph = 0,0327 Mach 2000 kph = 1,6326 Mach
45 kph = 0,0367 Mach 2500 kph = 2,0407 Mach
50 kph = 0,0408 Mach 5000 kph = 4,0815 Mach