Inductance Converter

Convert inductance between henries, millihenries, and microhenries, describing a component’s resistance to changing current.

Inductance Measures Resistance to Changing Current, Not Resistance to Current Itself

Inductance measures a component’s tendency to resist changes in the current flowing through it, a genuinely different property from electric resistance, which resists current flow itself regardless of whether that current is steady or changing, since an inductor happily allows steady current to flow with essentially no opposition at all, but actively resists any attempt to increase or decrease that current quickly, generating an opposing voltage precisely proportional to how fast the current is trying to change. The henry, the SI unit, is defined directly from this relationship, and just as with capacitance, the full henry represents a genuinely large amount of inductance rarely encountered in small electronic components, which is exactly why practical inductors used in everyday circuits, from power supply filtering to radio frequency tuning, are almost always specified in millihenries or microhenries rather than whole henries, following the same familiar scaling-down pattern already seen with capacitance and several other electrical units on this list. This property is precisely what makes inductors useful specifically for smoothing out rapid current fluctuations in a circuit, since their inherent resistance to sudden current change is exactly the behaviour power supply filtering and signal processing circuits deliberately exploit.