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

Enter your values:

Vin:
Volts
Ra:
Ohms
Rb:
Ohms
Vout:
Volts
Voltage Divider Calculator

A voltage divider (also known as a potential divider) consists of two resistances Ra and Rb connected in series across a supply voltage Vin. The supply voltage is divided between the two resistances to give an output voltage Vout which is the voltage across Rb.

This configuration is known as a voltage divider because it divides the input voltage into two parts.
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