Series RLC Impedance Calculator

How Series RLC Impedance works

The result comes from |Z| = √(R² + (XL − XC)²). Series RLC Impedance uses Resistance, Frequency, Inductance, Capacitance to report Impedance magnitude.

With the loaded values, impedance magnitude evaluates to 68.00 Ω. Change only the quantity being investigated.

Inputs for Series RLC Impedance

Resistance, Frequency, Inductance, and Capacitance belong to Series RLC Impedance. Keep source units with resistance.

Treat the preset entries as an arithmetic example. Supply measurements or ratings from the actual circuit. Compare this result with Resonant Frequency Calculator when resonant frequency is also needed.

Resistance

Example entry: 50 Ω.

Frequency

Example entry: 1000 Hz.

Inductance

Example entry: 0.02 H.

Capacitance

Example entry: 2 µF.

Reading the Series RLC Impedance result

This output represents Series RLC Impedance. Continue to Series RC Impedance Calculator for impedance magnitude.

Standard size, duty, temperature, and transient checks remain outside this single equation.

Measurement and units

Use RMS quantities unless a field explicitly asks for peak amplitude. Check prefixes on resistance.

Keep the same electrical reference points across saved cases.

Limits of this calculation

Component losses and parasitic effects become important at high frequency.

The arithmetic is intentionally narrower than a complete circuit model. Unentered effects remain outside Series RLC Impedance. Use Line Phase Voltage Calculator.

A useful Series RLC Impedance comparison

Record impedance magnitude before testing a different resistance value. For peak voltage, use Peak-to-Peak Voltage Calculator.

Document the alternate resistance source.

Questions about Series RLC Impedance