Resistor Color Code Decoder

Enter resistor color bands to instantly determine resistance and tolerance values. Supports standard 3 and 4-band resistor markings.

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Use the fields below, then run the calculation when your assumptions are ready.

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Your result will appear beside these inputs.

Ready when values are complete

Fill the required fields, then run the calculator to see the result.

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Inputs at a glance
Color bands
brown, black, red, gold
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What this tool does

Resistor Color Code Decoder helps you enter resistor color bands to instantly determine resistance and tolerance values. Supports standard 3 and 4-band resistor markings.

What you get

Resistor Color Code Decoder produces a direct output in this page and is designed to keep processing on your device.

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