Parallel Capacitor Calculator
Calculate total capacitance of capacitors connected in parallel
Enter values in microfarads (µF), separated by commas
How to Use This Calculator
Enter Capacitor Values
Type the capacitance values in microfarads (µF), separated by commas. Example: 100, 220, 470
Calculate
Click the button to compute total capacitance when connected in parallel.
View Result
The result appears in convenient units (µF, nF, or mF) and farads (F).
Formula
C_total = C₁ + C₂ + C₃ + ...
Where:
- C_total = Total capacitance (F)
- C₁, C₂, C₃ = Individual capacitances (F)
Example:
100 µF, 220 µF, 470 µF in parallel → C_total = 100 + 220 + 470 = 790 µF
Frequently Asked Questions
Why do capacitances add in parallel?
In parallel, the plate areas effectively add, increasing the ability to store charge. Hence, total capacitance is the sum of individual capacitances.
Do voltage ratings need to match?
All capacitors in parallel see the same voltage. Ensure each capacitor’s voltage rating exceeds the applied voltage.
What about tolerance?
Real capacitors have tolerance (e.g., ±10%). Actual total capacitance may vary accordingly.
Does ESR matter?
Parallel capacitors reduce effective ESR, which can improve ripple performance in power supplies.