Conversion Calculators

Effective Impedance

Effective Impedance is the DC resistance plus the additional apparent impedance caused by Inductance and/or Capacitance at a specific frequency.

Enter Inductance (L), Capacitance (C) Frequency (f) and DC Resistance (R) to calculate the Effective Impedance (Z) using the formula:

Z = √ (R2 + [(2πfL) - (1/(2πfC)]2)

Effective Impedance

Frequency (f)


DC Resistance (R)


Inductance (L)


Capacitance (C)



Effective Impedance (Z)



NOTE: A value must be entered into each input field for the calculator to work properly. If a value is unknown, entering "0" into that field is an acceptable entry.


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