Capacitor Calculator
Use this capacitor calculator to calculate capacitance, charge, voltage or stored energy. Enter the electrical values requested by the tool and review the missing capacitor value or energy result.
Combined capacitance
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Energy stored —
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How it works
Series: 1/C = 1/C₁ + 1/C₂; parallel: C = C₁ + C₂; energy = ½CV²How to use the Capacitor Calculator
Start by entering the electrical values requested by the tool. Keep the units consistent and check that each value belongs to the same question.
The result gives the missing capacitor value or energy result. Voltage rating, polarity and circuit conditions matter in real use. Use it as a guide and check any instructions, rules or professional advice that apply.
Frequently Asked Questions
What does this capacitor calculator calculate?
It gives the missing capacitor value or energy result. Voltage rating, polarity and circuit conditions matter in real use.
What information should I enter?
Enter the electrical values requested by the tool. Use the same units throughout so the result is easier to understand.
Can I choose a capacitor from this result alone?
No. Check voltage rating, tolerance, type and circuit requirements before selecting a part.