Calculate the required series resistor value for LEDs. This calculator helps you determine the correct resistor value to safely power LEDs from your voltage source.
Circuit Diagram
Vin
|
[R]
|
>|
LED
|
GND
Common LED Specifications
Results:
Important Notes
Always use a resistor with a power rating higher than the calculated power dissipation.
The actual LED current may vary slightly due to resistor tolerance.
For high-power LEDs, consider using a constant current driver instead.
Multiple LEDs in series require higher voltage but use the same current.