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Inductive and capacitive reactance calculator

XL, XC and resonant frequency at any frequency.

Hz
mH
µF

Calculating…

How it's calculated

XL = 2π × f × L XC = 1 ÷ (2π × f × C) f0 = 1 ÷ (2π√(LC))

Reactance is the AC "resistance" of inductors and capacitors, and it changes with frequency. Reactance rises with frequency for an inductor and falls for a capacitor. At the resonant frequency the two are equal, which matters when adding power factor capacitors to a system with harmonics.