Electrical engineering and electronics · Capacitors

Capacitor charge

Calculate the ideal charge on a capacitor from capacitance and voltage.

Published · R0

Method and scope

Q = CV.

Use capacitor charge for educational calculation or a clearly scoped arithmetic estimate. Intended for Learners, General educational use.

Inputs
  • Capacitance — F, mF, µF, nF
  • Voltage across capacitor — V, mV, kV
SOURCE AND LIMITS

Assumptions: Capacitance is constant and the voltage is across the capacitor.

Limitations: Real capacitance may vary with voltage, frequency, temperature, and tolerance.

Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.
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