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Capacitor Series/Parallel Calculator

Find the total capacitance of two capacitors in series or parallel.

Inputs

Saved Scenarios

— select 2+ to compare

Total Capacitance (µF)

32.000

Spark says

How it's calculated

Formula

Parallel:CT=C1+C2Series:CT=C1C2C1+C2Parallel: C_T = C_1 + C_2 \quad\quad Series: C_T = \dfrac{C_1 C_2}{C_1 + C_2}
C_1, C_2
— The two capacitor values

What is the Capacitor Series/Parallel Calculator?

Capacitors combine the opposite way resistors do: in parallel their capacitance adds directly, while in series the combined capacitance is lower than either individual capacitor.

How to use it

  1. 1 Enter both capacitor values.
  2. 2 Choose series or parallel configuration.

Worked examples

10µF and 22µF in series

Total capacitance is about 6.875µF.

Try it

Frequently asked questions

Why is capacitor math the opposite of resistor math?

Capacitance depends on plate area and separation in a way that's mathematically inverse to how resistance depends on cross-section — so the series/parallel formulas swap compared to resistors.