Resistance Frequency Capacitance Calculator

Enter any two of the following values and press calculate button.
Resistance (Ohms) :
Frequency (Hz) :
Capacitance (uF):

A Resistance-Frequency-Capacitance Calculator is typically used for RC (Resistor-Capacitor) circuits — often for low-pass filters, high-pass filters, and time constant calculations. It helps figure out the relationship between resistance, capacitance, and frequency, especially the cutoff frequency where the circuit starts filtering signals.

The formula for the cutoff frequency (fc) of an RC circuit is:

​

Where:
fc = Cutoff frequency (in hertz, Hz)
R = Resistance (in ohms, Ω)
C = Capacitance (in farads, F)
You can rearrange the equation depending on what you want to find:


So the cutoff frequency is about 159.15 Hz.