# Henries to Millihenries Conversion

Enter the electrical inductance in henries below to get the value converted to millihenries.

**Results in Millihenries:**

## How to Convert Henries to Millihenries

To convert a henry measurement to a millihenry measurement, multiply the electrical inductance by the conversion ratio.

Since one henry is equal to 1,000 millihenries, you can use this simple formula to convert:

The electrical inductance in millihenries is equal to the henries multiplied by 1,000.

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

### How Many Millihenries are in a Henry?

There are **1,000** millihenries in a henry, which is why we use this value in the formula above.

1 H = 1,000 mH

Henries and millihenries are both units used to measure electrical inductance. Keep reading to learn more about each unit of measure.

## Henries

One henry is equal to the inductance of a conductor in which there is one volt of electromotive force when the current through the conductor is increased by one ampere per second.^{[1]}

The henry is the SI derived unit for electrical inductance in the metric system. Henries can be abbreviated as *H*; for example, 1 henry can be written as 1 H.

The National Institute of Standards and Technology recommends using "henries" as the plural form of the unit,
however the usage of "henrys" is also common.^{[2]}

## Millihenries

One millihenry is equal to 1/1,000 of a henry, which is the inductance of a conductor with one volt of electromotive force when the current is increased by one ampere per second.

The millihenry is a multiple of the henry, which is the SI derived unit for electrical inductance. In the metric system, "milli" is the prefix for 10^{-3}. Millihenries can be abbreviated as *mH*; for example, 1 millihenry can be written as 1 mH.

## Henry to Millihenry Conversion Table

Henries | Millihenries |
---|---|

0.001 H | 1 mH |

0.002 H | 2 mH |

0.003 H | 3 mH |

0.004 H | 4 mH |

0.005 H | 5 mH |

0.006 H | 6 mH |

0.007 H | 7 mH |

0.008 H | 8 mH |

0.009 H | 9 mH |

0.01 H | 10 mH |

0.02 H | 20 mH |

0.03 H | 30 mH |

0.04 H | 40 mH |

0.05 H | 50 mH |

0.06 H | 60 mH |

0.07 H | 70 mH |

0.08 H | 80 mH |

0.09 H | 90 mH |

0.1 H | 100 mH |

0.2 H | 200 mH |

0.3 H | 300 mH |

0.4 H | 400 mH |

0.5 H | 500 mH |

0.6 H | 600 mH |

0.7 H | 700 mH |

0.8 H | 800 mH |

0.9 H | 900 mH |

1 H | 1,000 mH |

## References

- International Bureau of Weights and Measures, The International System of Units, 9th Edition, 2019, https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9.pdf
- Ambler Thompson and Barry N. Taylor, Guide for the Use of the International System of Units (SI),
*National Institute of Standards and Technology*, https://physics.nist.gov/cuu/pdf/sp811.pdf