Low Pass Filter Calculator

Calculate cutoff frequency and frequency response for an RC low pass filter.

Resistance (Ω)

Capacitance (nF)

Frequency (Hz)

Cutoff Frequency (fc)

1.59 kHz

-3dB rolloff

Magnitude @ 1.00 kHz

0.8467 (-1.45 dB)

Phase @ 1.00 kHz

-32.14°

fc = 1 / (2π × R × C)

|H(jω)| = 1 / √(1 + (f/fc)²)