LED Resistor Calculator

Name: LED Resistor Calculator
Availability: InStock

Calculate LED current limiting resistor

Supply Voltage

LED Color

Forward Voltage (Vf)

Forward Current (If)

LEDs in Series

500.0Ω

Calculated Value

470Ω

Nearest Standard

200.0 mW

Power Dissipated

1/2W

Recommended Wattage

R = (Vs - Vf) / If

R = (Supply Voltage - LED Forward Voltage) / Forward Current