How to Use the Resistor Color Code Calculator
Are you having trouble reading resistor color codes? If your answer is yes, then this tool is specifically designed for you! Our Resistor Color Code Calculator is a handy tool for reading carbon-composition resistors whether it’s a 4-band and 5-band.
To use this tool, simply click on a particular color and number and watch how the actual bands on the resistor illustration change. The resistance value is displayed on the field below together with the tolerance and the temperature coefficient.
Resistor Band Colors
As shown above, a carbon-composition resistor can have 4 to 6 bands. A 5-band resistor is more precise compared to a 4-band type because of the inclusion of a third significant digit.
|1st band||1st significant digit||1st significant digit||1st significant digit|
|2nd band||2nd significant digit||2nd significant digit||2nd significant digit|
|3rd band||multiplier||3rd significant digit||3rd significant digit|
|6th band||N/A||N/A||temperature coefficient|
Each color represents a number if it’s located from the 1st to 2nd band for a 4-band type or 1st to 3rd band for a 5-band and 6-band type.
|Black (2nd and 3rd bands only)||0|
Mnemonics were created to easily memorize the sequence of the colors. The most popular mnemonic is “Big Boys Race Our Young Girls But Violet Generally Wins” where the first letter of each word corresponds to the first letter of the color.
If the color is found on the 3rd band for a 4-band type or the 4th band for a 5-band type, then it’s a multiplier.
Notice that the number of zeroes is equal to the color’s number as per the previous table.
The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. Here, two colors are added (gold and silver).