Resistor Color Code Calculator

Decoding the resistance value and tolerance of axial lead resistors with 3, 4, 5, or 6 color bands.

Resistor Tool

Select the number of bands and their colors to see the value

Resistance Value
100.00 Ω
±5% Tolerance

How to Read

Band Roles:

1
Significant digit 1
2
Significant digit 2
M
Multiplier (10x)

Pro Tip:

Hold the resistor with the larger gap or gold/silver band on the right side. This band represents the tolerance and is always the last band.

Standard Examples

10kΩ Resistor
Brown, Black, Orange
1kΩ Resistor
Brown, Black, Red
220Ω Resistor
Red, Red, Brown
4.7kΩ Resistor
Yellow, Violet, Red