# Mach Number to Miles Per Hour Conversion

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

**Results in Miles Per Hour:**

## How to Convert Mach Number to Miles Per Hour

To convert a Mach measurement to a mile per hour measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 767.269148 miles per hour, so use this simple formula to convert:

The speed in miles per hour is equal to the Mach number multiplied by 767.269148.

**For example,**here's how to convert Mach 2 to miles per hour using the formula above.

Mach number and miles 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.^{[1]}

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 Classification | Mach Number |
---|---|

Subsonic | Mach < 1.0 |

Transonic | Mach = 1.0 |

Supersonic | Mach > 1.0 |

Hypersonic | Mach > 5.0 |

## Miles Per Hour

Miles per hour are a measurement of speed expressing the distance travelled in miles in one hour.^{[2]}

The mile per hour is a US customary and imperial unit of speed. Miles per hour can be abbreviated as *mph*, and are also sometimes abbreviated as *mi/h* or *MPH*. For example, 1 mile per hour can be written as 1 mph, 1 mi/h, or 1 MPH.

Miles per hour can be expressed using the formula:

v_{mph} = d_{mi}t_{hr}

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

## Mach to Mile Per Hour Conversion Table

Mach Number | Miles Per Hour |
---|---|

Mach 0.25 | 191.82 mph |

Mach 0.5 | 383.63 mph |

Mach 0.75 | 575.45 mph |

Mach 1 | 767.27 mph |

Mach 1.5 | 1,151 mph |

Mach 2 | 1,535 mph |

Mach 2.5 | 1,918 mph |

Mach 3 | 2,302 mph |

Mach 3.5 | 2,685 mph |

Mach 4 | 3,069 mph |

Mach 4.5 | 3,453 mph |

Mach 5 | 3,836 mph |

Mach 5.5 | 4,220 mph |

Mach 6 | 4,604 mph |

Mach 6.5 | 4,987 mph |

Mach 7 | 5,371 mph |

Mach 7.5 | 5,755 mph |

Mach 8 | 6,138 mph |

Mach 8.5 | 6,522 mph |

Mach 9 | 6,905 mph |

Mach 9.5 | 7,289 mph |

Mach 10 | 7,673 mph |

## References

- NASA, Mach Number, https://www.grc.nasa.gov/WWW/BGH/mach.html
- Wikipedia, Miles per hour, https://en.wikipedia.org/wiki/Miles_per_hour