Science
Series and parallel resistors
Calculate equivalent resistance for two resistors in series and parallel.
Calculators / Science / Series and parallel capacitors
Series and parallel capacitors calculator
Find equivalent capacitance for two capacitors.
On this page
Parallel capacitance320µF
Series capacitance68.75µF
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How to calculate
Find equivalent capacitance for two capacitors.
parallel = C1 + C2; series = C1 × C2 ÷ (C1 + C2)
Worked example
Capacitor 1 (µF): 100; Capacitor 2 (µF): 220.
Parallel capacitance: 320 µF; Series capacitance: 68.75 µF.
Assumptions and limits
Real capacitors have tolerance, voltage, ESR, polarity, temperature, and aging limits. Series voltage sharing may need balancing components.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Find equivalent capacitance for two capacitors. The result follows the displayed formula and keeps every adjustable assumption visible.
When this tool is useful
Use this tool to plan quantities or compare scenarios before making a purchase or technical decision.
Understanding your inputs
| Input | What to enter |
|---|---|
| Capacitor 1 (µF) | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Capacitor 2 (µF) | Enter a number of at least 0.000001 and no more than 1000000000000. |
Frequently asked questions
What can change the series and parallel capacitors result?
Real capacitors have tolerance, voltage, ESR, polarity, temperature, and aging limits. Series voltage sharing may need balancing components.
Should I round the inputs first?
No. Enter the best measurements available and round only the practical final quantity, such as full packs, boards, sheets, or components.