Capacitor Energy Calculator
Compute energy stored in a capacitor E = ½CV² = Q²/(2C).
Input Data
Capacitance
F
Voltage
V
Results
E = ½CV².
0.072J
Stored charge Q = CV.
0.012C
At a glance:E = ½CV² = ½QV = Q²/(2C). Complements capacitance and capacitor.
Formula
E = ½·C·V².
$$E = \dfrac{1}{2} C V^2$$$$Q = CV$$How to Use
- Enter C and V.
- The tool returns energy and charge.
Case Studies
C=1e-3, V=5
E = 0.0125 J.
FAQ
Doubling voltage?
Energy quadruples (∝ V²).
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.