Resistor Calculator – Calculator resistors 4, 5 and 6 bands of colors

Here you can calculate the required resistor for your LED circuit. Determine the color code of a resistor and calculate resistors for LED circuits.
By using this resistor calculator it is very simple to determine the color code of a resistor based on the resistor value. Of course, you can also provide a color code and the program will show you the resulting resistor value.

On the basis of the entered or calculated resistor value additionally the closest resistor within the E series as well as within the Renard numbers is displayed automatically.
As another feature the program can calculate the required resistor value for LED circuits (single LED, series connection and parallel connection) considering the supply voltage, the voltage drop across the LED(s) as well as the current of the LED(s).

After you have entered the supply voltage, the voltage drop across the the LED(s) as well as the current of the LED(s) the required resistor value and the power dissipation at the resistor is calculated.

With the button “Show resistor” the calculated resistor value is shown on the tab “Resistors”.
Here you can calculate the required resistor for your LED circuit.
After you have entered the supply voltage, the voltage drop across the the LED(s) as well as the current of the LED(s) the required resistor value and the power dissipation at the resistor is calculated.
With the button “Show resistor” the calculated resistor value is shown on the tab “Resistors”

WARNING
When installing, uncheck this option:

Download