Physics

Instant, private, and free

Capacitor Charge Time Calculator.

Calculate ideal RC charging voltage and charge fraction after a time.

On-device calculationNo signup

01

Set your values

Results update as you type.

02 / ANSWER

Supply voltage

Resistance

Capacitance

Elapsed time

capacitorVoltageV

3.16060V

chargeFraction

0.63212

timeConstantS

0.01000s

Results update automatically as you type.