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Inductive Reactance Calculator — XL from Frequency & Inductance

Calculate ideal inductor reactance from frequency and inductance with Hz/kHz and H/mH/µH input units.

Result

31.415927 Ω

50 Hz · 0.1 H

X_L = 2πfL

Formula and worked example

X_L = 2πfL.

At 50 Hz, a 0.1 H ideal inductor has about 31.416 Ω of inductive reactance.

Assumptions

  • The calculation uses the ideal sinusoidal steady-state relation.
  • Winding resistance, core loss, saturation and parasitic capacitance are not included.

Last updated: 2026-09-16

Frequently asked questions

Does inductive reactance increase with frequency?

Yes. In the ideal relation, reactance is directly proportional to frequency.

Is reactance the same as resistance?

No. Both are measured in ohms, but reactance is the frequency-dependent opposition associated with energy storage.

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