Resistor Codes. Now look at the 2nd colour band and match that colour to the same chart.
Write this number next to the 1st Digit. The Last colour band is the number you will multiply the result by. Match the 3rd colour band with the chart under multiplier. This is the number you will multiple the other 2 numbers by. Resistor color code calculator - 3, 4 and 5 band resistors. The calculator above will display the value, the tolerance and performs a simple check to verify if the calculated resistance matches one of the EIA standard values.
Select the first 3 or 4 bands for 20%, 10% or 5% resistors and all 5 bands for precision (2% or less), 5-band resistors. Hover above the tolerance for min. and max. range values. If you want to find out the color bands for a value, use the tool on the left. Graphical Resistance Calculator.