LED Resistor Calculator

Last updated: 2026-08-24

LED Resistor Calculator — Free online led resistor calculator. Enter supply v and led vf to get instant results.
Inputs
Result
Enter values and press Calculate

How to use it

  1. Identify The values of input
  2. Apply The formula correspondiente
  3. Realizar The calculation
  4. Obtain The 2 results

Common mistakes

  • ⚠️ Not Convert mA a A
  • ⚠️ Use voltaje of alimentación incorrecto
  • ⚠️ Not Verify power of The resistance

Worked example

Example of circuito electrónico

Resistencia limitadora to proteger The LED of sobrecorriente.