Resistor Color Coding

 

Select Band Colors and get Value

Resistor    Color    
Band 1  Resistor Value:  
Band 2  
Band 3  
Band 4    

 

Color First
Band
Second
Band
Multiplier
Band 3
Tolerance
Band 4
Black001 Ohm
Brown1110 Ohm1%
Red22100 Ohm2%
Orange331 K Ohm 
Yellow4410 K Ohm5%
Green55100 K Ohm0.5%
Blue661 M Ohm0.25%
Violet7710 M Ohm0.1%
Gray88100 M Ohm0.05%
White99   
Gold    0.1 Ohm5%
Silver    0.01 Ohm10%
None      20%

Note: This Page deals with standard through hole 4 band resistors.

 

Note:Resistor with 5 or more color bands are generally precision resistor of some type
High tolerance resistors may have 3 bands for significant figures rather than 2, or an additional band indicating temperature coefficient, military grade resistors may have a 5th band which indicates reliability.

 

Note: To Determine Surface Mount Resistor Values

Most surface mount resistors conform to a 3-digit or 4-digit code with many variations and more all the time.
The most common 3-digit SMD resistor the first 2 numbers represent the first 2 numbers in the answer. The third digit is the number of 0 you add after the first two digits.
For example: 223 is 22 000. Or 32,000 ohms. Or 320k.
222 = 22 00 = 2,200 = 2k2
473 = 47 000 = 47,000 = 47k
105 = 10 00000 = 1,000,000 = 1M = one million ohms
For resistors less than 100 ohms the third number is 0: 100, 220, 330. example 22 and NO zero's = 22 ohms.
there are some smd resistors with only two numbers 10, 22 and 33 = 10,22,33 ohms.
For more Info serch Internet for. "SMD resistor codes"