Capacitor Energy Calculator

Find the energy stored in a capacitor.

Stored energy (J) 0.072

Formula: E = ½ C V²

Step-by-step with your numbers:

1. Values used:

2. Capacitance = 1,000 µF

3. Voltage = 12 V

5. Stored energy = 0.072J

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A charged capacitor stores energy in its electric field.

The math behind it

E = ½ × capacitance (F) × voltage².

1000 µF at 12 V → 0.072 J.

Big capacitors?

Supercapacitors store far more — useful for short bursts.