Wien Bridge Oscillator Frequency Calculator

About this calculator

A Wien bridge oscillator generates a sine wave at a frequency set entirely by its resistor-capacitor network, following f = 1/(2πRC), where R and C are the matched resistor and capacitor values used in both arms of the bridge. This calculator takes R in kilohms and C in nanofarads and returns the resulting oscillation frequency, saving you from converting units and working through the 2π factor by hand.

The Wien bridge topology — invented by Max Wien in 1891 as a measurement bridge, later adapted into an oscillator by William Hewlett (co-founder of Hewlett-Packard) for his first commercial product, an audio oscillator — remains a standard circuit taught in electronics courses and used by audio and RF engineers for generating low-distortion sine waves in signal generators and audio test equipment, precisely because its frequency depends only on passive R and C values rather than active-component tolerances.