Resistors in Series Calculator

Resistors end to end simply add up.

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

    • The same current flows through every resistor in series.
    • 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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