Capacitors & Reactance

Capacitors in Series Calculator

Capacitors in Series Calculator. Series/parallel capacitance, RC time constant and AC reactance calculations. Calculations run in your browser. Entered electrical values are not uploaded to our server.

Inputs

Capacitor values

Separate multiple values with semicolons, for example 100; 220; 1k.

Default capacitance unit

Calculations run in your browser. Entered electrical values are not uploaded to our server.

ⓘMathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use.

Formula & method

1/Ctotal = Σ(1/Ci)

Worked example

10 µF and 20 µF in series ≈ 6.6667 µF

Assumptions & safety boundary

Mathematical estimate only. Verify equipment datasheets, manufacturer instructions, electrical codes and qualified design before real-world use.