Capacitor Energy Calculator
Calculate energy stored and charge in a capacitor.
Result
Complete the fields to calculate.
Formula and method
E = ½CV²; Q = CV
Important assumptions
A capacitor can retain hazardous voltage after disconnection. Use an appropriate discharge procedure.
Frequently asked questions
Does the calculation run locally?
Yes. Values are processed in your browser and are not sent to a server.
Can I use it for a real installation?
Use it as an educational reference and verify components, tolerances, safety, and applicable code with technical documentation or a qualified person.
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