Capacitor Energy Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the capacitance and voltage.
- Press Calculate.
How it works
Stored energy = ½ × capacitance × voltage² (capacitance in farads).
Worked example
1,000 µF at 10 V. = 0.05 J.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.