basic

AC Circuit RLC Impedance Calculator

Z = √(R² + (XL−XC)²) — series RLC impedance.

Calculates impedance, inductive reactance, capacitive reactance, and phase angle for a series RLC circuit at a given frequency.

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

Inputs

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

XL=2πfL; XC=1/(2πfC); Z=√(R²+(XL−XC)²); φ=atan((XL−XC)/R)

In depth

Calculates impedance, inductive reactance, capacitive reactance, and phase angle for a series RLC circuit at a given frequency.