Capacitive Reactance Calculator

Enter signal frequency and capacitance to calculate Xc for an ideal capacitor.

Frequency

Capacitance

—Capacitive reactance Xc

Educational / low-voltage electronics calculator. Real components have tolerances and non-ideal behavior. Do not use this page as a substitute for qualified design or safety guidance for mains/high-energy electrical systems.

How to use this Capacitive Reactance Calculator

Calculate ideal capacitor reactance from frequency and capacitance. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.