10µF and 10µF in series = 5µF
Worked answer for a 10µF capacitor and a 10µF capacitor wired in series.
Equivalent capacitance 5µF 10µF + 10µF in series
| Capacitor 1 (C₁) | 10µF |
| Capacitor 2 (C₂) | 10µF |
| Connection | series |
| Formula | 1/C = 1/C₁ + 1/C₂ |
| Equivalent capacitance | 5µF |
In series, capacitors give a value SMALLER than the smallest capacitor — the opposite of resistors in series.
Different values? Combine any number of capacitors in series or parallel in the interactive tool:
Open the Series/Parallel Capacitor Calculator →Disclaimer: This is an ideal calculation. Real capacitors have tolerance, ESR, and a voltage rating — for series strings the voltage divides unevenly and each part's rating still applies. Confirm against your components' datasheets before building.