What you provide
What you provide
- Capacitance expressed in F, using the same scenario as the other inputs
- Capacitor voltage expressed in V, using the same scenario as the other inputs
PHYSICS / ELECTROSTATICS
Capacitor Energy Calculator
Calculate ideal energy and charge stored by a capacitor. Review the symbolic equation, substituted SI values, assumptions, and result together.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
Calculate ideal energy and charge stored by a capacitor. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.
Calculation path
U=(1/2)CV^2
What you receive
What you receive
- Stored capacitor energy in J from the stated equation
- A symbolic formula plus substituted working with your values
- Visible assumptions, field guidance, and an authoritative learning reference
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Capacitance is constant and within component ratings; discharge hazards and dielectric losses require separate review.
Use internally consistent units and retain extra precision when carrying the result into another calculation.
Reviewed reference factors