Voltage Divider Calculator
Enter input voltage and two resistors to find the divided output voltage.
8 V
Output voltage (Vout)
A voltage divider uses two resistors to scale an input voltage down to a lower output.
How to use
- Enter the input voltage Vin.
- Enter resistor values R1 and R2.
- Read the output voltage across R2.
Frequently asked questions
- What is the divider formula?
- Vout = Vin × R2 / (R1 + R2).
- Does load affect the output?
- Yes, a connected load draws current and lowers Vout from the ideal value.