Enter the source voltage and the resistance of two different resistors to calculate the output voltage of a voltage divider.

## Voltage Divider Formula

The following formula is used in voltage dividers.

- Where V out is the output voltage
- V in is the input voltage
- R1 is the value of resistor one in resistance
- R2 is the value of resistor two in resistance

The voltage is measure in volts and the resistance is measure in ohms.

## Voltage Divider Definition

A voltage divider is a system or two more resistors that divides an input voltage into a reduced output voltage.

How to calculate a voltage

**First, determine the two resistances.**This is calculating the voltage out in a voltage divider, so there should be two different resistances.

**Next, measure the voltage going into the voltage divider.**Using a volt meter or similar device, measure the voltage entering the divider.

**Calculate the output voltage.**Enter the information from steps 1 and 2 into the calculator or formula above.

## FAQ

**What is a voltage divider?**

A voltage divider is a device that consists of two or more resistors that reduces the output voltage entering the device.

**What does a voltage divider do?**

A voltage divider reduces the output voltage given an input voltage.

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