Free Online LED Resistor Calculator
Calculate your LED Resistor with this free tools & conversions tool.
Enter values and select Calculate to see your result.
About this calculator
The LED Resistor Calculator is a free online tools & conversions tool on Calcuto. Enter Supply Voltage, Forward Voltage and Current Ma, and it instantly works out your LED Resistor result and shows it below the form. You can change any value and recalculate right away to compare different scenarios. There is no sign-up and nothing to install: it works in any modern browser, on desktop, tablet, or phone.
How to use it
To use the LED Resistor Calculator, enter Supply Voltage, Forward Voltage and Current Ma in the form above and select Calculate. Calcuto runs the LED Resistor calculation from your inputs and shows the result below the form. Change any input and calculate again to compare scenarios.
Frequently asked questions
Is the LED Resistor Calculator free to use?
Yes. The LED Resistor Calculator is completely free, with no sign-up or download required.
What information do I need for the LED Resistor Calculator?
Provide Supply Voltage, Forward Voltage and Current Ma, then select Calculate to see your result.
Is my data saved when I use the LED Resistor Calculator?
No personal data is saved. Your inputs are used only to work out the result and are not stored; only your currency and theme preferences are kept in your own browser.
Does the LED Resistor Calculator work on mobile?
Yes. It works in any modern web browser on desktop, tablet, and mobile.