Read the result
The real part is resistance. The imaginary part is net reactance: inductive if positive, capacitive if negative.
Engineering applications
AC Impedance Calculator
Calculate series RLC impedance and see resistance and reactance as a complex number.
Formula
Z = R + j(omega L - 1/(omega C)), omega = 2*pi*f
Result
Worked substitution
Complex impedance packages resistance and reactance into one calculation.
Where it helps
Useful for circuit checks where magnitude gives impedance size and phase tells how voltage and current are shifted.
Common slip
Capacitance must be entered in farads. Microfarads need converting, for example 10 uF is 0.00001 F.
Try it
Increase frequency and watch the inductive term grow while the capacitive term shrinks.