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Legacy LED Resistor Calculator

Enter LED Data:
Input Voltage:  VDC (3.0, 12, etc.)
LED Forward Voltage:  VDC
LED Operating Current:  mA (10, 50, mA etc.)
Number of LEDs:  (1, 2, 10, etc.)
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SERIES WIRED:
You need a ohm watt resistor
Resistor Color Code:
Resistor Location:
PARALLEL WIRED:
You need QTY: x ohm watt resistor
Resistor Color Code:
Resistor Location:
Minimum Power Supply Current: mA
>
Calculated Resistance Value Ohms
Actual LED Current mA
Power Dissipated by LED mW
Power Dissipated by Resistor mW
Total LED Voltage in Series: Volts
Your power supply must supply at least: mA
Actual Resistor Wattage: mA
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