Impedance Calculator
Use this AC impedance workflow when resistance and reactance values are already known and you need the magnitude and phase angle.
- Net reactance
- ohm
- Impedance magnitude
- ohm
- Phase angle
- deg
- Power factor magnitude
- PF
- Reactance type
Calculation details
- Calculation basis
- Selection boundary
Recent results
Formulas
- Net reactance = inductive reactance - capacitive reactance
- Impedance magnitude = sqrt(resistance^2 + net reactance^2)
- Phase angle = atan2(net reactance, resistance)
- Power factor magnitude = resistance / impedance magnitude
Use this calculator
Estimate net reactance, impedance magnitude, phase angle, and power factor from resistance, inductive reactance, and capacitive reactance.
Read the result
Review the calculated values with their displayed units and assumptions. The result is a planning aid for the stated inputs, not a final equipment or installation decision.
Check before final work
This impedance estimate uses entered reactance values. It does not calculate frequency-dependent reactance from component values, verify ratings, model harmonics, or approve a circuit design.
FAQs
Does this calculate XL or XC from frequency?
No. Enter reactance values that already match the frequency of interest. A future reactance calculator can own component-value conversion.
What does a positive phase angle mean?
Positive net reactance indicates an inductive result. Negative net reactance indicates a capacitive result.
Can this analyze harmonics?
No. It is a sinusoidal steady-state arithmetic screen from the entered values.