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