LED Resistor Calculator

Calculate the correct resistor value to protect a Light Emitting Diode (LED).

Inputs

Supply Voltage (Vs)

LED Forward Voltage (Vf)

LED Forward Current (If)

Number of LEDs

LED

Results

Enter LED and power supply parameters to calculate resistance

Always choose a resistor with a higher Watt rating than the calculated dissipation.

Embed This Calculator

Share this tool with your audience. 100% free and fully responsive.

How Does the LED Resistor Calculator Work?

The LED Resistor Calculator allows you to perform calculations quickly and easily. Simply enter the required values and click the calculate button to get instant results.

1
Enter Values
Enter the required values in the appropriate input fields.
2
Adjust Settings
Enter the required electrical values.
3
View Results
Click the "Calculate" button to see the result instantly.

Frequently Asked Questions

How accurate is this calculator?

This calculator uses standard verified formulas to provide accurate and reliable results.

Does the calculator support different voltage systems?

Yes, it supports different voltage systems.

Support Our Project

Our site is completely free, you can support us to help us stay online and develop new tools.

Buy me a coffee

Related Calculators

💡