Resistor Color Code Calculator

Four Band Resistor Color Code Calculator

Five Band Resistor Color Code Calculator

Resistor color code chart

The chart below shows how to determine the resistance and tolerance for resistors. The table can also be used to specify the color of the bands when the values are known. An automatic resistor calculator can be used to quickly find the resistor values.

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Tight tolerance resistors may have three bands for significant figures rather than two, or an additional band indicating.