Welcome! This page will use the frequency of an AC source and the capacitance value of a capacitor to calculate its reactance. Reactance is an important property of capacitors and inductors that arises due to the changing direction of the current flow in AC circuits.
Reactance is similar to resistance, with the difference being that resistance describes the opposition to the flow of current, while reactance describes the opposition to the change in the current (which is the case in AC circuits). Let's begin!


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When provided with an AC voltage, a capacitor will produce a reactance. This reactance depends on the AC source frequency and the capacitance value.


Additional Resources

To calculate the reactance of an inductor, ohm's law or generator fault current, check out our other calculators!
  1. 🔗 Inductor Reactance
  1. 🔗 Ohm's Law
  1. 🔗 Generator Fault Current