Calculate the resonant frequency of an LC circuit.
Circuit Components
Resonant Frequency
Enter L and C values
About this calculator
Quick Reference
fFrequency (Hz)
LInductance (H)
CCapacitance (F)
Overview
An LC circuit, consisting of an inductor (L) and a capacitor (C), will resonate at a specific frequency where the inductive reactance equals the capacitive reactance.
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Pro Tips
This is widely used in radio tuners and filters.
At resonance, the impedance of a series LC circuit is zero (ideal), and infinite for a parallel LC (ideal).
The formula is f = 1 / (2π√LC).
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Fun Facts
"Resonance is how radios pick up a specific station frequency."
"The 'Q' factor determines how sharp the resonance peak is."
"Parasitic resistance always exists in real circuits, dampening the resonance."
