Resistor Color-Code Calculator
Resistance
About this tool
Decode four-band and five-band resistor color markings.
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Frequently asked questions
Which resistor codes are supported?
Four-band and five-band resistor color codes are supported.
What does the tolerance band mean?
It states the permitted percentage variation around the nominal resistance.
How should I orient the resistor?
The tolerance band is commonly spaced farther from the other bands and belongs on the right.