An inductor and a capacitor wired together form a resonant tank circuit that naturally oscillates at one special frequency, and this calculator finds it. The resonant frequency equals one divided by two pi times the square root of the inductance multiplied by the capacitance. This is the tuning heart of radios, oscillators, filters and wireless power circuits, where the tank rings at a chosen frequency and rejects everything else. Enter your inductance in henries and capacitance in farads, using convenient units like microhenries and picofarads, and the tool returns the resonant frequency along with the angular frequency in radians per second. If you already know the frequency you want, the same relationship lets you check whether your parts will land you there. Everything runs locally in your browser, so results are instant and private.
An inductor and a capacitor wired together form a resonant tank circuit that naturally oscillates at one special frequency, and this calculator finds it. The resonant frequency equals one divided by two pi times the square root of the inductance multiplied by the capacitance.
Yes. LC Resonant Frequency Calculator is completely free, with no sign-up and no usage limits.
Yes. LC Resonant Frequency Calculator runs in any modern web browser. There is nothing to download or install.
Yes. LC Resonant Frequency Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.