The operating frequency of an electric motor is a fundamental parameter for the correct sizing and adjustment of electric propulsion systems. In brushless motors, this frequency is directly related to the rotation speed (RPM) and the number of poles of the motor, influencing performance, efficiency, and compatibility with electronic speed controllers (ESCs).

This calculator allows you to estimate the electrical frequency in hertz (Hz) using the formula.
f (Hz) = (RPM × number of poles) / 120, assisting engineers, integrators, and designers in technical analysis, ESC configuration, and validation of operational limits in applications such as drones, light aircraft, and experimental systems.

Frequency Calculator

Calculate the motor's operating frequency from its RPM and number of poles.

Operating frequency — Hz
Formula: f (Hz) = (RPM × number of poles) / 120