Enter the no-load voltage and full load voltage into the calculator to determine the voltage regulation.

Voltage Regulation Formula

The following equation is used to calculate the Voltage Regulation.

VR = (V1 – V2) / V1

  • Where Where VR is the voltage regulation
  • V1 is the no-load voltage
  • V2 is the full-load voltage

V1 and V2 can be substituted whether you are looking at the up or down-regulation. In general V1 should be greater than v2.

What is a Voltage Regulation?


Voltage regulation measures a system’s ability to provide constant voltage over a wide range of loads. In actual physical systems, this is performed by a voltage regulator.

How to Calculate Voltage Regulation?

Example Problem:

The following example outlines the steps and information needed to calculate Voltage Regulation.

First, determine the no-load voltage. In this example, the no-load voltage is 100 volts.

Next, determine the full-load voltage. In this case, the full-load voltage is 50 volts.

Finally, calculate the voltage regulation using the formula above:

VR = (V1 – V2) / V1

VR = (100 – 50) / 100

VR = .50 = 50%