How to use the inductor energy calculator
Find energy stored in an inductor. Enter inductance, current in the fields above; the energy is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “coil stored energy”, “magnetic energy”, “calculate inductor energy”, “find energy”.
Formula
Variables
- L — Inductance (mH)
- I — Current (A)
Worked example
With inductance = 100 mH, current = 3 A, the calculator gives energy ≈ 0.45 J.
Frequently asked questions
What is the inductor energy calculator used for?
Find energy stored in an inductor. It helps with questions such as “coil stored energy”, “magnetic energy”, “calculate inductor energy”.
What is the formula for the inductor energy calculation?
Energy (J) = 0.5 × L / 1000 × I × I. Here L is inductance (mH), I is current (A).
What inputs do I need for the inductor energy calculator?
You need inductance in mH, current in A. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the inductor energy calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the inductor energy result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.