Convert henries to millihenries and millihenries to henries instantly. Bidirectional inductance converter with formula and common values.
To convert henries to millihenries, multiply by 1,000. The millihenry is one-thousandth of a henry, the SI unit of electrical inductance.
| Henries (H) | Millihenries (mH) |
|---|---|
| 0.001 | 1 |
| 0.01 | 10 |
| 0.1 | 100 |
| 0.47 | 470 |
| 1 | 1,000 |
| 2.5 | 2,500 |
| 5 | 5,000 |
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One henry equals exactly 1,000 millihenries (mH). The milli- prefix represents one-thousandth of the base unit.
Inductance is measured in henries (H) in the SI system, named after Joseph Henry. Smaller values use millihenries (mH), microhenries (µH), or nanohenries (nH).
Millihenries are common in power supply filter inductors, audio crossover coils, and relay coils, typically ranging from a few mH to several hundred mH.
Multiply the inductance in henries by 1,000. For example, 0.47 H × 1,000 = 470 mH.