Inductive Reactance Calculator
Solve XL = 2πfL for inductive reactance, frequency or inductance. Pick the unknown, enter the other two with their units, and get the result with every conversion and calculation step shown.
Input
Output
| Quantity | Value |
|---|---|
| No data yet | |
More ways to use this tool
REST API
curl -X POST https://api.iotools.cloud/v1/tool/inductive-reactance-calculator \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"solveFor": "reactance",
"frequency": "60",
"frequencyUnit": "Hz",
"inductance": "1",
"inductanceUnit": "H",
"reactance": "377",
"reactanceUnit": "Ω"
}'Swap in your own key from your account. The tool's fields are the body — no wrapper.
Ask an AI agent
Use the IOTools `inductive-reactance-calculator` tool (Inductive Reactance Calculator) on this input:
YOUR_INPUT_HEREPaste this at any agent connected to the IOTools MCP server, then add your input.
Embed widget
<iframe
src="https://iotools.cloud/embed/inductive-reactance-calculator/"
width="100%" height="520" frameborder="0" scrolling="no" loading="lazy"
title="Inductive Reactance Calculator — iotools.cloud"
sandbox="allow-scripts allow-forms allow-same-origin allow-downloads allow-popups allow-popups-to-escape-sandbox"
allow="clipboard-write"
style="width:100%;border:1px solid #e5e7eb;border-radius:12px;overflow:hidden"></iframe>
<script src="https://iotools.cloud/embed.js" async></script>Drop this into your own page — free, no key required, just a link back.
| Cost per API/MCP call | From 5 credits |
|---|---|
| Need more credits? | View pricing |
Also available with
Guides
Inductive reactance (XL) is how strongly an inductor resists alternating current. Unlike resistance it grows with frequency: XL = 2π × f × L. This calculator solves that equation for whichever value you don't know — reactance, frequency or inductance — and shows each step.
How to use it
- Choose what to Solve For.
- Enter the other two values and pick their units (Hz–GHz, nH–H, mΩ–MΩ).
- Read the result table and the step-by-step working. Values are converted to base SI units first, so mixed units are safe.
Worked example
A 1 H inductor on 60 Hz mains: XL = 2π × 60 × 1 ≈ 377 Ω. At 120 Hz it doubles.
Why does reactance rise with frequency?
An inductor opposes changes in current. The faster the current alternates, the harder it pushes back, so higher frequencies see higher reactance. At DC (0 Hz) an ideal inductor has zero reactance.
Is reactance the same as impedance?
No. Reactance is the imaginary part of impedance; real inductors also have winding resistance. For an ideal inductor, voltage leads current by 90°.
What if frequency or inductance is zero?
When solving for frequency or inductance, the other values are divisors, so zero is rejected with a clear message.
Privacy
All calculations run in your browser; nothing is sent to a server.