Electronics 2000

Resistor Colour Code Calculator

This calculator converts resistor values to or from 5-band or 4-band colour codes.

To convert from value to colours:
Select the resistor type (4 or 5 bands) using the radio buttons. Type the resistance in the box below and select the units and (optionally) the tolerance from the drop-down boxes. The colour bands will be displayed below on the image of the resistor.

To convert from colours to value:
Select the resistor type (4 or 5 bands) using the radio buttons. Hover the mouse over the coloured bands on the image of the resistor to display the colour selector box, then click on the required colour. Repeat for all bands (tolerance is optional). The resistance will be shown in the box above the image, along with the units and tolerance.

Preferred resistor values:
Converting a value either way will display the nearest preferred resistor value below the image of the resistor. Use the radio buttons below the image to select the series of preferred values to use (E12 - E192).

If you have any problems using this new calculator contact me or see this discussion on the Electronics 2000 forum.

Select code type: 4 band code    5 band code

Enter Resistance:     Select Tolerance:

The colour code is:  

 
 


Select Value Series: E12    E24    E48    E96    E192

The nearest preferred resistor value is:  Ohms
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  • All the online calculators and more in a stand-alone application
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Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Grey
White
Black
Brown
Red
Orange
Yellow
Green
Blue
Gold
Silver
Brown
Red
Gold
Silver
None