Free LC Resonant Frequency Calculator
Calculate the resonant frequency of an LC circuit: f = 1 / (2 * pi * sqrt(L * C)).
mH
μF
Resonant Frequency
159.15 Hz
Angular Frequency1,000.00 rad/s
Resonant Frequency vs Inductance
LC Resonant Frequency
An LC circuit oscillates at a natural frequency determined by the inductance and capacitance.
Formula
f = 1 / (2*pi*sqrt(L*C))
At resonance, the inductive and capacitive reactances are equal and cancel, leaving only resistance to limit current.
Example Calculation
An LC circuit with L = 10 mH and C = 100 μF.
- 01f = 1 / (2*pi*sqrt(L*C))
- 02f = 1 / (2*pi*sqrt(10e-3 * 100e-6))
- 03f = 1 / (2*pi*sqrt(1e-6))
- 04f = 1 / (2*pi*0.001)
- 05f = 1 / 0.006283 = 159.15 Hz
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