Resistor Color Coding Scheme

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There are three types of resistor color coding. They have different number of color bands and hence provide different information. This is illustrated by the next table. You can calculate the value of an unknown resistor by entering its color code in the fields below the table.
 

6-band color code

3 digits, multiplier, tolerance,
thermal coefficient

5-band color code 

3 digits, multiplier, tolerance

4-band color code 

2 digits, multiplier, tolerance

Enter all the color bands. Select None for field 6. Select None for fields 3 and 6.
1:  2:  3:  4:  5:  6: 
Value:

And finally here is the complete color codes table. The band number that contains the given value is shown in braces [ ] and the table is easy to use by itself.
 

Color Digits [1-3] Multiplier [4] Tolerance [5] TC [6]
Black 0 1    
Brown 1 10 1% 100ppm
Red 2 100 2% 50ppm
Orange 3 1k   15ppm
Yellow 4 10k   25ppm
Green 5 100k 0.5%  
Blue 6 1M 0.25%  
Violet 7 10M    
Gray 8      
White 9      
Gold     5%  
Silver     10%  
1999 Martin Hachenberg Return to Resources-Page