Capacitor Energy
Calculate charge and stored energy in an ideal capacitor.
Your numbers
Stored energy
Idealized SI-unit educational model. Real components, tolerances, losses and safe operating limits require separate verification.
Scenario comparison
Up to three snapshots in this tab. Loading one replaces the current inputs.
Formula
E=½CV²; Q=CV
Calculate charge and stored energy in an ideal capacitor.
Worked example
- Capacitance (µF)
- 1000
- Voltage (V)
- 12
- Stored energy
- 0.072 J
- Charge
- 0.012 C
Scope and limitations
Idealized SI-unit educational model. Real components, tolerances, losses and safe operating limits require separate verification.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: 66f52a80f4e9 · Example checked: