Equal Component Butterworth Low Pass Filter Calculator

Ra = Filter Resistor
Rb = Filter Resistor
(Ra = Rb)
Ca = Filter Capacitor
Cb = Filter Capacitor
(Ca = Cb)
Rc = Feedback Resistor
Rd = Feedback Resistor

Enter value of Cutoff Frequency, any one value – Resistor or Capacitor, any one value – Resistor Rc or Resistor Rd and click on calculate. Result will be displayed.

Enter your values:

Cutoff Frequency:

(Enter any one value – Resistor or Capacitor and any one value – Resistor Rc or Resistor Rd)

Resistor (Ra = Rb):
Capacitor (Ca = Cb):
Resistor Rc:
Resistor Rd:

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