Sallen-Key Active Butterworth Low Pass Filter Calculator

R_a = Filter Resistor
R_b = Filter Resistor
(R_a = R_b)
C_a = Filter Capacitor
C_b = Filter Capacitor

Enter your values:
Cutoff Frequency:
Results: (Enter any one value - Resistor or C_a or C_b)

Resistor (R_a = R_b):
Capacitor C_a:
Capacitor C_b: