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Reactance Calculator — Inductive XL, Capacitive XC & LC Resonance

Editable live calculator

Change any input — the result updates immediately

No hidden assumptions. Inputs, units and the working stay visible so you can check the calculation.

Calculation Solve for Frequency Frequency unit Inductance Inductance unit Optional RMS voltage (V) Enter 0 to skip ideal current/reactive-power context.

Calculated result

Inductive XL = 62.83185307 Ω

Formula family: XL = 2πfL

Frequency: 1,000 Hz

Reactance: 62.83185307 Ω

Inductance: 0.01 H

Optional RMS voltage is 0, so current context is skipped.

Reactive-power magnitude: —

Show the working

1. Convert engineering units to SI: f in Hz and L in henries.
2. Use XL = 2πfL and rearrange only for the selected unknown.
3. XL = 2π × 1,000 × 0.01 = 62.83185307 Ω.

Ideal reactance ignores winding resistance, ESR, core/dielectric loss, parasitic elements and self-resonance. Use manufacturer impedance data for real components near their limits.

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