MAXScanner electronics calculator
Inductor Energy Calculator — Joules, Current & Magnetic Storage
Calculate ideal magnetic energy stored in an inductor from current and inductance entered in mH, with results in joules, millijoules and microjoules.
Results
Energy 0.02 J
20 mJ
20,000 µJ
Formula and assumptions
E=½LI².
10 mH carrying 2 A stores 0.02 J.
- Inductance is treated as constant at the entered current.
- Core saturation and winding losses are excluded.
Frequently asked questions
Why is current squared?
Ideal stored magnetic energy grows with I², so doubling current quadruples energy.
Does this include copper loss?
No. I²R heating is dissipative loss, not stored magnetic energy.