Resistor Colour Code Calculator

The Resistor Colour Code
Colour	Number
Black	0
Brown	1
Red	2
Orange	3
Yellow	4
Green	5
Blue	6
Violet	7
Grey	8
White	9

The Resistor Colour Code Calculator can be used to identify resistors. It consists of three card discs showing the colours and values, these are fastened together so you can simply turn the discs to select the value or colour code required. Simple but effective!

There are two versions to download and print on A4 white card (two per sheet):

• Coloured (for a colour printer)
• Black and White (for a black only printer)
  This version must be coloured manually, it is easiest to do this before cutting out.

To make the calculator, carefully cut out the three discs and fasten them together with a small brass paper fastener.

The calculator design is copyright but it may be freely copied for educational purposes.

The Resistor Colour Code Calculator is supplied as a PDF file. To view and print PDF files you need an Acrobat Reader which may be downloaded free for Windows, Mac, RISC OS, or UNIX/Linux computers. If you are not sure which type of computer you have it is probably Windows.