Parallel Capacitor Calculator: Total Capacitance in Parallel Circuits

Your details

Value of the first capacitor.
Value of the second capacitor. Leave blank to omit.
Value of the third capacitor. Leave blank to omit.
Optional fourth capacitor. Leave blank or zero to omit.
Optional fifth capacitor. Leave blank or zero to omit.
Optional sixth capacitor.
Optional seventh capacitor.
Optional eighth capacitor.
Optional ninth capacitor.
Optional tenth capacitor.
Total parallel capacitance
79.00 uF

Sum of all active capacitor values, auto-scaled to the most readable unit

Total (pF)79,000,000pF
Total (nF)79,000nF
Total (uF)79uF
Capacitors in circuit3
C1 (pF)10,000,000
C2 (pF)22,000,000
C3 (pF)47,000,000
C110,000,000
C222,000,000
C347,000,000

Total parallel capacitance: 79.00 uF across 3 capacitors.

  • Your parallel combination stores 79.00 uF of total charge per volt applied, more than any single capacitor alone.
  • C3 (47.00 uF) contributes 59.5% of the total capacitance.
  • The two largest capacitors account for about 87% of the total: adding smaller ones has diminishing returns unless you need fine-tuning.
  • In a parallel arrangement every capacitor sees the full supply voltage, so the voltage rating of the weakest capacitor limits the safe working voltage of the whole bank.

Next stepCheck that the voltage rating of each capacitor exceeds the circuit supply voltage. For ripple-current applications (power-supply filters) also check the ESR and ripple-current ratings.

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