What this calculator does
Capacitors in series & parallel works out combined capacitance of up to four capacitors, wired in series or in parallel. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaParallel: C = C1+C2+… · Series: 1/C = 1/C1 + 1/C2 + …
The inputs explained
| Field | What to enter |
|---|---|
| C1 (µF) | A number, measured in µF. Starts at 10. |
| C2 (µF) | A number, measured in µF. Starts at 22. |
| C3 (0 to ignore) (µF) | A number, measured in µF. Starts at 0. |
| C4 (0 to ignore) (µF) | A number, measured in µF. Starts at 0. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with c1
Every other input is held at the calculator’s starting values while c1 varies. Select any row to load that scenario into the calculator.