Inductor Impedance Calculator
Enter the frequency and inductance to get the inductive reactance.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
An inductor opposes changes in current with inductive reactance, XL = 2πfL, where f is the AC signal frequency (Hz) and L is inductance (henries). Unlike a resistor, reactance isn't a fixed opposition — it scales directly with frequency, so the same coil behaves almost like a short circuit at DC (f = 0) and like an open circuit at very high frequencies.
This frequency-dependent behavior is why inductors are used in filters (blocking high frequencies while passing low ones), chokes, and impedance-matching networks. Electronics engineers calculate XL when designing filter cutoff points or predicting how a circuit's impedance shifts across a frequency range.
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