Resistor Color Code Calculator

Calculate 4-band or 5-band resistor values and learn how to read resistors correctly.

Select resistor type:

Band 1: Band 2: Band 3: Multiplier: Tolerance:

How to Read a Resistor:

Start reading from the side where the bands are closest together.
The first 2 (or 3 for 5-band) bands are significant digits.
The next band is the multiplier.
The last band indicates tolerance.
5-band resistors are more precise and are often used for critical applications.