Capacitance Calculator - Calculate Charge, Energy & Capacitor Circuits
Capacitance is the ability of an object to store electric charge. A capacitor is an electronic component specifically designed to store electrical energy in the form of an electric field. The unit of capacitance is the Farad (F). The charge stored in a capacitor is calculated by Q = CV, where C is capacitance and V is voltage. The stored energy is E = ½CV². In a series circuit, the total capacitance is smaller, while in a parallel circuit, the total capacitance is the sum of all capacitors.
Q = CV; E = ½CV²; 1/C_series = Σ1/Ci; C_parallel = ΣCiVariables:
- CCapacitance(e.g.: 1×10⁻⁶ F)
- QElectric Charge(e.g.: 1×10⁻⁵ C)
- VVoltage(e.g.: 10 V)
- EEnergy(e.g.: 5×10⁻⁵ J)
Categories:
How to Use the Calculator
- 1
Choose Mode
Select mode: Q & E (charge and energy) or Series/Parallel (circuit configuration)
- 2
Enter Data
Enter capacitance and voltage values, or individual capacitor values
- 3
Calculate
Click calculate to get results
Examples
Capacitor Charge and Energy
A 10 µF capacitor is charged to 100 V. Calculate stored charge and energy.
- 1.Q = CV = 10×10⁻⁶ × 100 = 1×10⁻³ C = 1 mC
- 2.E = ½CV² = ½ × 10×10⁻⁶ × 100² = 0.05 J
Charge is 1 milliCoulomb, energy stored is 0.05 Joule
Series Circuit
Three capacitors 6 µF, 3 µF, and 2 µF are connected in series. Find total capacitance.
- 1.1/C = 1/6 + 1/3 + 1/2 = 1/6 + 2/6 + 3/6 = 6/6 = 1
- 2.C = 1 µF
Total series capacitance is 1 µF