RLC Impedance Calculator

Calculate the impedance of a series RLC circuit at a specific frequency.

Components & Frequency

Frequency (f)

Resistance (R)

Inductance (L)

Capacitance (C)

Impedance (Z)

Enter circuit parameters

About this calculator

Quick Reference

ZImpedance

XLInductance React.

XCCapacitance React.

Overview

Impedance (Z) is the total opposition to current flow in an AC circuit, combining magnitude (resistance) and phase (reactance).

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Pro Tips

Fun Facts

"Impedance is a complex number, but this calculator gives the magnitude."
"Speakers often have a nominal impedance (like 8Ω), but it varies with frequency."

Formula: Z = √[R² + (XL-XC)²]