How to Use This Calculator

1

Enter Inductance

Enter the inductor value in microhenries (µH).

2

Enter Current

Enter the current flowing through the inductor in amperes.

3

Get Energy

Click calculate to see the stored energy in joules or millijoules.

Formula

E = ½ × L × I²

Where:

E = Energy stored (Joules)
L = Inductance (Henries)
I = Current (Amperes)

Example:

Inductance = 100 µH, Current = 1 A

E = 0.5 × (100 × 10^-6) × 1² = 0.5 × 0.0001 = 0.00005 J (50 µJ)

About Inductor Energy Storage Calculator

The Inductor Energy Storage Calculator calculates the energy stored in an inductor's magnetic field. Inductors store energy proportional to the square of current, making them important in power supply design and energy storage applications.

When to Use This Calculator

Power Supply Design: Calculate energy storage in switching power supplies
Inductor Selection: Size inductors based on energy requirements
Educational Purposes: Learn about inductor energy storage

Why Use Our Calculator?

✅ Accurate Calculations: Uses correct energy formula
✅ Easy to Use: Simple interface
✅ Free Tool: No registration required

Common Applications

Switching Power Supplies: Inductors in switching supplies store energy during the ON phase and release it during the OFF phase, maintaining output voltage.

Tips for Accurate Results

Enter inductance in microhenries
Energy is proportional to the square of current
Higher current means much more stored energy

Frequently Asked Questions

How is inductor energy different from capacitor energy?

Inductor energy depends on current squared (E = ½LI²), while capacitor energy depends on voltage squared (E = ½CV²). Inductors store energy in magnetic fields, capacitors in electric fields.

What happens to the energy when current stops?

When current through an inductor is interrupted, the stored energy is released. This can create high voltage spikes, which is why flyback diodes are used in inductive circuits.