Capacitor Charge Calculator

The constant voltage charging the capacitor — also the level the capacitor approaches but never quite reaches.

The series resistance the charging current flows through. Together with the capacitance it sets the time constant τ = R·C.

The capacitor size in microfarads. Bigger capacitors charge more slowly and store more energy at the same voltage.

The instant after switch-on you care about, in milliseconds; the result gives the capacitor voltage at that moment plus the full charging curve.