Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Frequency (Hz)

Frequency of the applied sinusoid.

Inductance (H)

Inductance of the coil.

Compute inductive reactance XL = 2 * pi * f * L, which grows with frequency and inductance. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

XL (Ω)

Magnitude of the inductive reactance.

• Inductor calculations depend on core material, air gap, turns, frequency, waveform, temperature, DC bias, copper resistance, skin and proximity effects, fringing, and saturation definition. Small-signal inductance and nominal current rating may not describe switching operation.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Capacitive Reactance Calculator

  Compute capacitive reactance XC = 1 / (2 * pi * f * C), which shrinks as frequency or capacitance grows.

• EMI Inductor Reactance

  Calculate ideal inductor reactance 2πfL from frequency and inductance, ignoring winding resistance and self-resonance.

• Resonant Frequency Calculator

  Compute the LC tank resonant frequency f0 = 1 / (2 * pi * sqrt(L * C)), where inductive and capacitive reactances cancel.