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Series Resistance Calculator
Series resistances add.
Choose a resistor workflowDecode color bands, combine resistor networks, or calculate conductor resistance.
6 optionsSERIES RESISTANCE320 Ω
R = R₁ + R₂ + R₃ + R₄
Estimate based on the values shownFormula checkedColor value = significant digits × 10^multiplier; parallel R = 1/Σ(1/R); conductor R = L/(σπ(d/2)²). List modes accept up to ten editable resistor values; conductor length additionally supports millimeters.