On this page ...
I forget them all the time,... the proper
color codes for a particular resistance.
That's why I created this little tool that helps you identify
colorcodes and/or determine the colorcodes needed for resistors.
Note: My Calculator
is copyrighted! Feel free to use it on your website, however you
must then include the copyright statement
in the code and below the calculator, including a link to http://www.weethet.nl as
The calculator has been tested with Internet
Explorer 5 and up, MyIE 2
and up, NetCaptor 6 and up, Opera 6 and up and Mozilla 1.2.1 and
An updated version of this calculator can be found at Tweaking4All: Resistor Color Calculator.
My Resistor Calculator
©2003, Hans Luyten - http://www.weethet.nl
Resistor Color codes
First of all make sure you read the colors in the right
Usually a resistor has either a silver or a gold band.
Keep that one to the right
(as seen above). You're now looking at the proper color code order
(from left to right).
Sometimes, specially within damaged or durty equipment, color codes
can be very hard to read.
I recommend using a regular multi-meter (Ohm-meter)
measure the resistance (if the resistor is not completely toast).
Note: Keep in mind to not hold your fingers to the
contacts of the multi-meter testers
or the leads of the resistor, otherwise you're putting yourself
in parallel with the resistor and the multi-meter will most likely indicate
Note: Do not try to measure resistors in-circuit,
as the result
will most likely by faulty as well ...