# Hours to Milliseconds Conversion

Enter the time in hours below to get the value converted to milliseconds.

**Results in Milliseconds:**

## How to Convert Hours to Milliseconds

To convert an hour measurement to a millisecond measurement, multiply the time by the conversion ratio.

Since one hour is equal to 3,600,000 milliseconds, you can use this simple formula to convert:

The time in milliseconds is equal to the hours multiplied by 3,600,000.

**For example,**here's how to convert 5 hours to milliseconds using the formula above.

### How Many Milliseconds are in an Hour?

There are **3,600,000** milliseconds in an hour, which is why we use this value in the formula above.

1 hr = 3,600,000 ms

Hours and milliseconds are both units used to measure time. Keep reading to learn more about each unit of measure.

## Hours

The hour is a period of time equal to 1/24 of a day or 60 minutes.

The hour is an SI accepted unit for time for use with the metric system. Hours can be abbreviated as *hr*; for example, 1 hour can be written as 1 hr.

## Milliseconds

The millisecond is a multiple of the second, which is the SI base unit for time. In the metric system, "milli" is the prefix for 10^{-3}. Milliseconds can be abbreviated as *ms*; for example, 1 millisecond can be written as 1 ms.

## Hour to Millisecond Conversion Table

Hours | Milliseconds |
---|---|

0.000001 hr | 3.6 ms |

0.000002 hr | 7.2 ms |

0.000003 hr | 10.8 ms |

0.000004 hr | 14.4 ms |

0.000005 hr | 18 ms |

0.000006 hr | 21.6 ms |

0.000007 hr | 25.2 ms |

0.000008 hr | 28.8 ms |

0.000009 hr | 32.4 ms |

0.0000001 hr | 0.36 ms |

0.000001 hr | 3.6 ms |

0.00001 hr | 36 ms |

0.0001 hr | 360 ms |

0.001 hr | 3,600 ms |

0.01 hr | 36,000 ms |

0.1 hr | 360,000 ms |

1 hr | 3,600,000 ms |