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Inductor Energy Calculator

Science & Engineering

E = ½LI² · magnetic storage · switching converters

Quick Answer

Inductor Energy Calculator: E = ½LI² · magnetic storage · switching converters. Inductor Energy Calculator uses standard science & engineering formulas to compute accurate results instantly.

How it works

  1. 1E=½LI² — double the current, 4× the energy
  2. 2An inductor stores energy in its magnetic field; current cannot change instantly
  3. 3Switching converters shuttle energy through the inductor every cycle
  4. 4Breaking the loop releases the field as a high-voltage kickback

Inductor parameters

mH
A
Stored magnetic energy0.20J
Equivalent：200 mJ
Energy if I ×2：0.80 J
Unlike capacitors, inductors tolerate shorts but hate open circuits: interrupting current produces L·di/dt kickback that can punch through switches — relay coils and motor windings always need a flyback diode. Cored inductors saturate: past the saturation rating inductance collapses and ½LI² no longer holds. Pair with our RC circuit tool for time-constant work.

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How to Use

  1. Enter known quantities: fill values and confirm units in the Inductor Energy Calculator.
  2. Instant solution: unknowns solve live with the formula shown transparently.
  3. Use constant/material tables: standard physical constants and material data are listed on this page.
  4. Compare conditions: change inputs to compare scenarios.

Key Points

  • Inductor Energy Calculator is a free online science & engineering tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: E = ½LI² · magnetic storage · switching converters.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Inductor Energy Calculator formula

Inductor Energy Calculator uses standard science & engineering formulas to compute accurate results instantly.

FAQ

How do I use the Inductor Energy Calculator?
Open the page and fill in the input fields — results update automatically. E = ½LI² · magnetic storage · switching converters.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on CODATA recommended constants and standard physics formulas. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Inductor Energy Calculator[EB/OL]. https://www.yijiansuan.com/en/c/science/inductor-energy

Results provided by this tool are for reference only and do not constitute professional advice.