# Rc filter calculator

This page is a web application that design a RC low-pass filter. Use this utility to calculate the Transfer Function for filters at a given frequency or values of R and . This passive RC low pass filter calculator calculates the cutoff frequency point of the low pass filter, based on the values of the resistor, R, and the capacitor, C, .

BufretLignendeOversett denne sidenThe simple R-C filter rolls off the frequency response at dB per octave above the cutoff frequency. The position of the resistor and capacitor are switched to . Figureshows a lowpass filter made from a RC section, It’s cutoff frequency is shown below. The cutoff frequency (-dB) of a High- or low pass filter can be calculated with the formula: .

The two circuits shown at right are the basic low and high pass RC filters. They each consist of one capacitor and one resistor. RC pad calculation calculate corner frequency upper and lower cutoff frequency filter time constant tau RC voltage power calculator capacitance resistance . So, by using the potential divider equation of two resistors in series and substituting for impedance we can calculate the output voltage of an RC Filter for any . RC Low Pass Filter – Frequency and Bode Plot Calculator.

This tool calculates the crossover frequency for a RC low pass filter. Since capacitive reactance decreases with frequency, the RC circuit shown discriminates against high frequencies.