Resistor Calculator

About this calculator

The resistor color code, in the two variants in use: four bands and five bands. You choose the colors band by band and the tool returns the value, the tolerance and the range the actual resistance can fall in. Below, the calculation is explained so you can repeat it by hand: the first two or three colors are digits, the next one is the multiplier and the last one is the tolerance.

Within the Electronics Technician program, this content is covered in Electrical materials, Electrical quantities, and Symbols and components.

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