Resistor Colour Code Calculator
Decode a 4-band resistor colour code into resistance and tolerance.
Enter your values and press Calculate.
How to use the Resistor Colour Code calculator
Decode a 4-band resistor colour code into resistance and tolerance. Enter your values above and press Calculate; the result appears instantly, and the formula used is shown below so you can check the working.
Formula
R = (band1 × 10 + band2) × 10multiplier
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