LED Resistance Calculator

Resistor Calculator

If you don't have a calculator handy, use this JavaScript resistor calculator to do the math.




Source Voltage =
LED Forward Voltage Drop =
LED Forward Current in Milliamps =
Needed Resistance in Ohms =

Using Closest Standard 5% Resistor
Closest Standard 5% Resistor =
Closest Standard 5% Resistor Wattage =
Actual Current =
Actual Power Dissipated By LED =
Actual Power Dissipated By Resistor =


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Copyright 2019 LEDSupply. All Rights Reserved. Site Map | Terms + Conditions




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