# Voltage Divider Calculator

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

## Voltage Divider Formula

• 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.

How to calculate a voltage

1. First, determine the two resistances.

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

2. Next, measure the voltage going into the voltage divider.

Using a volt meter or similar device, measure the voltage entering the divider.

3. 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.