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LED Resistor Calculator
Calculate resistor value for LED circuits
Supply Voltage (V)
LED Forward Voltage (V)
LED Current (mA)
Led Type
Choose an option...
Custom Values
Red LED (1.8V, 20mA)
Green LED (2.1V, 20mA)
Blue LED (3.2V, 20mA)
White LED (3.2V, 20mA)
Yellow LED (2.0V, 20mA)
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How to Use
Fill in the Required Values
Click "Calculate" Button
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Results
Step-By-Step Solution