Impedance Calculator


About Impedance Calculator (Formula)

The Impedance Calculator is a tool used to compute the impedance of an electronic circuit component, such as a resistor, capacitor, or inductor, in an alternating current (AC) circuit. Impedance is the complex equivalent of resistance in AC circuits, accounting for both the resistance and reactance due to the component’s characteristics. The formula for calculating impedance varies based on the type of component:

  1. Resistor Impedance: Impedance = Resistance
  2. Capacitor Impedance: Impedance = 1 / (2πfC)
  3. Inductor Impedance: Impedance = 2πfL


  • Impedance: The complex quantity representing the opposition to the flow of AC current through a component.
  • Resistance: The real part of impedance, indicating the opposition to the flow of current due to the component’s resistance.
  • Capacitance (C): The capacitance value of the capacitor.
  • Inductance (L): The inductance value of the inductor.
  • Frequency (f): The frequency of the AC signal in hertz (Hz).

Impedance calculations are essential in AC circuit analysis, design, and troubleshooting. Different components offer varying opposition to AC current based on their characteristics and the frequency of the signal.

The Impedance Calculator simplifies the process of determining impedance values for different circuit components, assisting engineers, students, and electronics enthusiasts in understanding and optimizing AC circuit performance.

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