Inductance Converter
Millihenry (mH)
Definition: A millihenry is a submultiple of the henry, equal to one-thousandth (1/1,000) of a henry.
History/origin: As electronics shrank from massive machinery to tabletop devices, the millihenry became a more practical unit for everyday engineering tasks.
Current use: Commonly used to measure audio-frequency inductors, filters in power supplies, and ignition coils in vehicles.
Henry (H)
Definition: The henry (symbol: H) is the SI derived unit of electrical inductance. It is defined as the inductance of a closed circuit in which an electromotive force of one volt is produced when the electric current in the circuit varies uniformly at a rate of one ampere per second.
History/origin: Named in honor of Joseph Henry (1797–1878), who discovered electromagnetic induction around the same time as Michael Faraday. It was officially adopted by the International Electrotechnical Commission in 1893.
Current use: The Henry is used to specify the inductance of large coils, power transformers, and heavy industrial inductors.
Millihenry (mH) to Henry (H) Conversion Table
| Millihenry (mH) [mh] | Henry (H) [h] |
|---|---|
| 0.01 mh | 0.00001 h |
| 0.1 mh | 0.0001 h |
| 1 mh | 0.001 h |
| 2 mh | 0.002 h |
| 3 mh | 0.003 h |
| 5 mh | 0.005 h |
| 10 mh | 0.01 h |
| 20 mh | 0.02 h |
| 50 mh | 0.05 h |
| 100 mh | 0.1 h |
| 1000 mh | 1 h |
How to Convert Millihenry (mH) to Henry (H)
1 mh = 0.001 h
1 h = 1000 mh
Example: convert 15 mh to h:
15 mh = 15 × 0.001 h = 0.015 h
Did You Know?
- Millihenries (mH) are commonly found in the crossover networks of loudspeakers. They help direct the right sound frequencies to the woofer and tweeter.
- Did you know? The unit "Henry" is named after Joseph Henry, an American scientist who discovered self-inductance independently of Michael Faraday around the same time!