Free LED Series Resistor Calculator

Design your LED circuits with precision. Enter your parameters below to instantly calculate the required resistor value, power dissipation, and standard E24 series matching.

Configuration

LED Configuration

Source Voltage (V)

Forward Voltage (Vf)

Current (mA)

Recommended Resistance

0.0 Ω

Power Dissipation

0.0 W

Closest E24 Standard Value

0 Ω

Power Rating: N/A

Configuration

Invalid Configuration