**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.

`Mach=(kph)/1225.044`

If you do not wish to use our converter, you can always choose to perform the mathematical conversion operations manually. To do this, simply follow the following steps:

- Replace the variable
**kph**with the value in kph that you want to convert. - Carry out mathematical operations, respecting priorities.
- Get the final value of mach with the rounding you want.

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 |

While great efforts have been made to ensure the accuracy of our conversion formulas, as well as all other information that is presented on our website, we can not give any guarantee or be held responsible for any errors that may have been made by our automatic calculators. As such, we urge our users to immediately contact with us if they find any error in the conversions made. Of course, we will try to correct any reported anomalies as quickly as possible! Thank you.