Voltage Divider Calculator

Enter any three of the following values and then click calculate button.


Vout = Rb/(Ra+Rb) × Vin
Vin = Input Voltage
Vout = Output Voltage

Vin:
Volts
Ra:
Ohms
Rb:
Ohms
Vout:
Volts

A Voltage Divider Calculator is a tool that helps you calculate the output voltage across a particular resistor in a voltage divider circuit. A voltage divider is a simple circuit made up of two resistors in series, where the input voltage is divided across the resistors based on their resistance values.

How It Works:
The voltage divider formula is:

Where:
Vout is the output voltage across R2 ,
Vin is the input voltage,
R1 and R2 are the resistances of the two resistors.
Why It's Useful:
Adjust Voltage Levels: It's commonly used to reduce or adjust voltage levels in circuits, especially when you need a specific voltage that is lower than the input voltage.
Simple and Cost-Effective: It's a very simple and low-cost method to create voltage references for various applications.
Applications: It's widely used in sensors, analog-to-digital conversion, and voltage regulation for various electronic devices.
The Voltage Divider Calculator saves you time by doing the math for you, especially if you have multiple resistors or different values to work with. It's particularly handy for designers, engineers, or hobbyists when working with circuits where voltage levels need to be controlled or adjusted.