Butterworth Pi Low Pass Filter Calculator
Enter Fc, Zo and n (all three are required) to calculate filter component values.
Cutoff Frequency (Fc):
Hz
KHz
MHz
GHz
Characteristic Impedance (Zo):
ohm
Kohm
Mohm
Number of Components (n):
(1-9)
L1
L2
L3
L4
nH
µH
mH
H
C1
C2
C3
C4
C5
pF
nF
µF
mF
F