The Impedance Calculator finds reactance, total impedance and phase angle for RL, RC and RLC circuits at a given frequency. Inductive and capacitive reactance are reported separately alongside the net value.
Impedance Calculator (RL, RC, RLC)
Calculate inductive and capacitive reactance, total impedance, phase angle and power factor for series RL, RC and RLC circuits, with resonant frequency and Q factor.
Circuit
Component values
Results
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impedance |Z|
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phase angle
Notes
About Impedance Calculator (RL, RC, RLC)
Features
- RL, RC and RLC configurations
- Inductive and capacitive reactance shown separately
- Net reactance and impedance magnitude
- Phase angle in degrees
- Optional voltage input
How to Use
- Pick the circuit configuration.
- Enter resistance, frequency and the L or C values.
- Read reactance, impedance and phase angle.
Examples
Example: an RL circuit with R = 10 ohms and L = 100 mH at 50 Hz -> X_L = 31.416 ohms, |Z| = 32.969 ohms, phase 72.34 degrees.
Benefits
- Phase angle shows how far the load sits from unity power factor
- Separate X_L and X_C make resonance easy to spot
Frequently Asked Questions
What does this calculator do?
Calculate inductive and capacitive reactance, total impedance, phase angle and power factor for series RL, RC and RLC circuits, with resonant frequency and Q factor.
Is my data stored?
No. Everything runs in your browser; nothing is uploaded, saved or logged.