This tool you can calculates Stored energy in Capacitor. Just enter the Capacitance value, select the unit and give the voltage to get Energy stored vale instantly.
⚡ Capacitor Energy Calculator
Energy: 0 Joules
Also Check: If you are a hobbyist in electronics or professional you need more calculator tools to calculate several electronics related problems, So All capacitor and resistor related online calculators are sharing to simplify the problem.
What is the energy stored in a capacitor?
The capacitor is an electronic component widely used in every electronic circuit. Its major function is to store charge inside it. The charge is stored between the plates as the form of electric field. The Storage capacity depends on the capacitance value of the capacitor. The charge is stored between two parallel plates separated by a non-conductive material. The Total energy stored in a capacitor is proportional to the capacitance value and the square of the voltage applied.
Simple Example
- If the two terminals of the capacitor connected with voltage will store the electricity inside of it.
- When this capacitor connected to the circuit will release the charge.
Real Life Use case
✔ In SMPS and Adapter the capacitor smooth the voltage and filter most of the noise in the voltage. So it is used in phone, mobile chargers and computer.
✔ In modern camera flash, the capacitor store large voltage and release it instantly as a bright flash.
✔ In audio amplifiers, the capacitor used for filtering Rectified pulsating voltage and gives fine DC voltage to amplifier. For better bass punch, the big capacitor is needed.
Capacitor Energy Formula
E is the energy sored in capacitor. The C represents the capacitance value in Farad, in calculator tool you can select using based capacitor value. The V is voltage applied across the capacitor terminals. The equation will be,
E = ½ × C × V²
How to Calculate Energy in a Capacitor (Step-by-Step)
Using the formula we can calculate the capacitor total energy stored using the parameters of Capacitance value and applied voltage.
- C = 100µF
- V = 12V
Then the Total energy stored inside capacitor is E = 1/2 x C xV2
Convert microfarads to Farads 100μF=100×10−6=0.0001F
E = 1/2 x 0.0001×(12)2 = 0.0072 Joules
Capacitor Unit Conversion
If you are doubt or feel difficult to convert the units of capacitance, just enter the value in the given unit converter tool.
Frequently Asked Questions
𝐸=1/2x𝐶x𝑉2 where E is stored energy, C is capacitance in farad and V is voltage.
The capacitor is not charging instantly. the capacitor voltage is build up gradually in it from 0 volt to V. 0 is the initial voltage and V is final voltage. voltage increases linearly and it will be VxV = V2
Np, if the capacitor has more capacitance value can store more energy in it. Depends on the capacitors capacitance value.



