Series LED Resistor Calculator

This tool allows you to determine which resistor you should use when you have a single LED or a number of the same color of LEDs in series. It displays resistor value and recommended resistor wattage.

This calculator also displays the color coding and SMD code for resistor used in the circuit.

Learn more about SMD resistor code.

To learn more about this tool watch a comprehensive tutorial video on our YouTube channel.


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