The Impedance Calculator determines the total opposition that an alternating current circuit presents to the flow of electric current. Impedance combines both resistance and reactance to show how a circuit responds to AC signals, measured in ohms (Ω). Using the formula Z=R2+X2Z = \sqrt{R^2 + X^2}Z=R2+X2​, where RRR is resistance and XXX is reactance, this calculator quickly finds the overall impedance value. It helps engineers, physics students, and technicians understand how resistive and reactive components work together in AC systems, making it a vital tool for circuit design and electrical analysis.