# Miles Per Hour to Speed Of Sound Conversion

Enter the speed in miles per hour below to get the value converted to speed of sound.

**Results in Speed Of Sound:**

## How to Convert Miles Per Hour to Speed Of Sound

To convert a mile per hour measurement to a speed of sound measurement, multiply the speed by the conversion ratio. One mile per hour is equal to 0.001303 speed of sound, so use this simple formula to convert:

The speed in speed of sound is equal to the miles per hour multiplied by 0.001303.

**For example,**here's how to convert 500 miles per hour to speed of sound using the formula above.

Miles per hour and speed of sound are both units used to measure speed. Keep reading to learn more about each unit of measure.

## Miles Per Hour

Miles per hour are a measurement of speed expressing the distance travelled in miles in one hour.^{[1]}

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.

## Speed Of Sound

The speed of sound is the distance a sound wave travels through an elastic medium.
The speed of sound through air at 20 °C is equal to 343 meters per second,^{[2]} or roughly 767 miles per hour.

Speed of sound can be abbreviated as *sound*, for example 1 speed of sound can be written as 1 sound.

## Mile Per Hour to Speed Of Sound Conversion Table

Miles Per Hour | Speed Of Sound |
---|---|

1 mph | 0.001303 sound |

2 mph | 0.002607 sound |

3 mph | 0.00391 sound |

4 mph | 0.005213 sound |

5 mph | 0.006517 sound |

6 mph | 0.00782 sound |

7 mph | 0.009123 sound |

8 mph | 0.010427 sound |

9 mph | 0.01173 sound |

10 mph | 0.013033 sound |

20 mph | 0.026066 sound |

30 mph | 0.0391 sound |

40 mph | 0.052133 sound |

50 mph | 0.065166 sound |

60 mph | 0.078199 sound |

70 mph | 0.091233 sound |

80 mph | 0.104266 sound |

90 mph | 0.117299 sound |

100 mph | 0.130332 sound |

200 mph | 0.260665 sound |

300 mph | 0.390997 sound |

400 mph | 0.521329 sound |

500 mph | 0.651662 sound |

600 mph | 0.781994 sound |

700 mph | 0.912327 sound |

800 mph | 1.0427 sound |

900 mph | 1.173 sound |

1,000 mph | 1.3033 sound |

## References

- Wikipedia, Miles per hour, https://en.wikipedia.org/wiki/Miles_per_hour
- CK-12, Speed of Sound, https://www.ck12.org/physics/speed-of-sound/lesson/Speed-of-Sound-MS-PS/