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A resistor is a perhaps the most common building block used in circuits. Resistors come in many shapes and sizes this tool is used to decode information for color banded axial lead resistors.

4 Band Description

The number of bands is important because the decoding changes based upon the number of color bands. There are three common types: 4 band, 5 band, and 6 band resistors. For the 4 band resistor:

Band 1 – First significant digit.
Band 2 – Second significant digit
Band 3 – Multiplier
Band 4 – Tolerance

To aid in calculating the values of resistors you can use our 4 band resistor calculator or from the resistor colour chart table below. The 4 band resistor calculator is bar far easier and quicker.

4 band resistor calculator

Select the color of each band on the resistor:
Resistor Value:

Resistor colour chart

Colour1st Band2nd Band3rd Band (Multiplier)4th Band (Tolerance)
Black 0 0 x100
Brown 1 1 x101 1%
Red 2 2 x102 2%
Orange 3 3 x103
Yellow 4 4 x104
Green 5 5 x105
Blue 6 6 x106
Violet 7 7 x107
Gray 8 8 x108
White 9 9 x109
Gold 5%
Silver 10%