Series & Parallel Resistor, Capacitor & Inductor Calculator
Find the equivalent series and parallel value of any number of resistors, capacitors or inductors, with SI prefix input and output.
Runs on your device
Result
Results appear here as you type.
What it does
Resistors and inductors add in series and combine reciprocally in parallel; capacitors do the opposite. Enter all values and get both results.
How to use it
- Choose the component type.
- Enter the values separated by commas or spaces.
- Read both equivalents.
Example
The example fills in realistic values and runs the tool. Select Try an example above to see it.
When it helps
- Making a nonstandard value from standard parts.
- Circuit analysis homework.
- Checking capacitor banks.
Questions
Why is the parallel resistance smaller than every resistor?
Each extra path lets more current flow, so the combination always conducts better than any single branch.
Does this include tolerance?
No, it uses nominal values.
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