basic

RLC Resonant Frequency Calculator

f₀ = 1 / (2π · √(L · C)) and quality factor Q.

Compute the resonant frequency of a series RLC circuit, f₀ = 1 / (2π·√(L·C)), the angular resonant frequency ω₀, and the quality factor Q = (1/R) · √(L/C). Reports the −3 dB bandwidth f₀ / Q.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mH
µF
Ω

Results

Enter values and click Calculate to see results.
Was this helpful?

How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

f₀ = 1 / (2π · √(L·C)); Q = (1/R) · √(L/C); BW = f₀ / Q.

In depth

Compute the resonant frequency of a series RLC circuit, f₀ = 1 / (2π·√(L·C)), the angular resonant frequency ω₀, and the quality factor Q = (1/R) · √(L/C). Reports the −3 dB bandwidth f₀ / Q.