Resistors in Parallel Calculator

Resistors side by side give a lower total.

Leave any box at 0 if you have fewer resistors. Values are in ohms. Everything is worked out in your browser. Nothing is saved or sent anywhere.

1. Resistors (ohms)

2. Supply

3. Results

How it was worked out

    What this does and doesn't tell you

    • Every resistor in parallel has the full supply voltage across it.
    • 240V AC mains can kill. In Australia, work on household mains wiring must be carried out by a licensed electrician. Low-voltage DC systems can still deliver very high current.
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