# Kilometers Per Hour to Speed Of Sound Conversion

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

**Results in Speed Of Sound:**

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

To convert a kilometer per hour measurement to a speed of sound measurement, multiply the speed by the conversion ratio. One kilometer per hour is equal to 0.00081 speed of sound, so use this simple formula to convert:

The speed in speed of sound is equal to the kilometers per hour multiplied by 0.00081.

**For example,**here's how to convert 5,000 kilometers per hour to speed of sound using the formula above.

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

## Kilometers Per Hour

Kilometers per hour are a measurement of speed expressing the distance travelled in kilometers in one hour.

The kilometer per hour, or kilometre per hour, is an SI unit of speed in the metric system. Kilometers per hour can be abbreviated as *km/h*, and are also sometimes abbreviated as *kph*. For example, 1 kilometer per hour can be written as 1 km/h or 1 kph.

In formal expressions, the slash, or solidus (/), is used to separate units used to indicate division in an expression.^{[1]}

Kilometers per hour can be expressed using the formula:

v_{km/s} = d_{km}t_{hr}

The velocity in kilometers per hour is equal to the distance in kilometers 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.

## Kilometer Per Hour to Speed Of Sound Conversion Table

Kilometers Per Hour | Speed Of Sound |
---|---|

1 km/h | 0.00081 sound |

2 km/h | 0.00162 sound |

3 km/h | 0.00243 sound |

4 km/h | 0.003239 sound |

5 km/h | 0.004049 sound |

6 km/h | 0.004859 sound |

7 km/h | 0.005669 sound |

8 km/h | 0.006479 sound |

9 km/h | 0.007289 sound |

10 km/h | 0.008098 sound |

20 km/h | 0.016197 sound |

30 km/h | 0.024295 sound |

40 km/h | 0.032394 sound |

50 km/h | 0.040492 sound |

60 km/h | 0.048591 sound |

70 km/h | 0.056689 sound |

80 km/h | 0.064788 sound |

90 km/h | 0.072886 sound |

100 km/h | 0.080985 sound |

200 km/h | 0.16197 sound |

300 km/h | 0.242954 sound |

400 km/h | 0.323939 sound |

500 km/h | 0.404924 sound |

600 km/h | 0.485909 sound |

700 km/h | 0.566893 sound |

800 km/h | 0.647878 sound |

900 km/h | 0.728863 sound |

1,000 km/h | 0.809848 sound |

2,000 km/h | 1.6197 sound |

3,000 km/h | 2.4295 sound |

4,000 km/h | 3.2394 sound |

5,000 km/h | 4.0492 sound |

6,000 km/h | 4.8591 sound |

7,000 km/h | 5.6689 sound |

8,000 km/h | 6.4788 sound |

9,000 km/h | 7.2886 sound |

10,000 km/h | 8.0985 sound |

## References

- National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units, https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using
- CK-12, Speed of Sound, https://www.ck12.org/physics/speed-of-sound/lesson/Speed-of-Sound-MS-PS/