RC Time Constant

Calculate RC time constants and charge or discharge curves

Mode

ResistanceResistance unitCapacitanceCapacitance unitElapsed time (s)Input voltage (V)

tau = R x C, charge V(t)=Vin x (1 - e^(-t/tau))

Time constant

1 s

Time constant

1,000 ms

5 tau settling time

5 s

Voltage at time

1.9673 V

Percent of input

39.35%