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# LED Resistor Calculator

LED Series Resistance refers to the usage of resisters to stabilize the LED current. LED's are generally made with the built-in series resistors, which is one of the easiest way to limit and control the flow of the power. Use this online calculator to find the value of the current limiting series resistor when burning the single or an array of low-current LED's. Input the values in the below LED Resistor calculator to find the LED series resistance as well as recommended resistors.

## LED Series Resistor Calculator

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LED Series Resistance refers to the usage of resisters to stabilize the LED current. LED's are generally made with the built-in series resistors, which is one of the easiest way to limit and control the flow of the power. Use this online calculator to find the value of the current limiting series resistor when burning the single or an array of low-current LED's. Input the values in the below LED Resistor calculator to find the LED series resistance as well as recommended resistors.

#### Formula:

Resistance = (Supply Voltage - (LED Voltage x Number of LED's))/LED Current

### Example:

LED Series Resistor Calculation 3 red color LED diodes with voltage 2V has a supply voltage of 10 V and current 7 mA. The resistor precision is 10 %, find resistance.

#### Solution:

Resistance = 10 - (2x 3) / 7
= 571.4286 Ω