LED Resistor Calculator
Prevent blown LEDs by finding the perfect series resistor for your circuit.
1. LED Presets
2. Circuit Specs
Select LED Color
Supply Voltage
V
Forward Voltage
V
Forward Current
mA
Number of LEDs
Ideal Resistance
285
Ohms (Ω)
300 Ω
Nearest Standard
(E12 Series)
(E12 Series)
0.11 W
Resistor Power
Dissipation
Dissipation
Color Band Guide
Color Code: Orange - Black - Brown