All tools
viewhub.stream · Electrics Tools

RC & RL Time Constant Calculator

Time constant, charge time and filter cut-off frequency

Circuit

Type values like 4.7k, 4k7, 100n or 2M2.

Ω
F
H
V
%
s

Display

Time Constant τ

–
 

Cut-Off Frequency

–
 

Settled (5τ)

–
 

Time to Target

–
 

Voltage at Time t

–
 

Energy Stored

–
 

Charging Curve

Time Constants

TimeSecondsChargedValue