Enter the output voltage and the input voltage into the calculator to determine the Voltage Efficiency.

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## Voltage Efficiency Formula

The following formula is used to calculate the Voltage Efficiency.

**Ev = OV / IV * 100**

- Where Ev is the Voltage Efficiency (%)
- OV is the output voltage
- IV is the input voltage

## How to Calculate Voltage Efficiency?

The following two example problems outline how to calculate the Voltage Efficiency.

**Example Problem #1:**

- First, determine the output voltage. In this example, the output voltage is given as 75.
- Next, determine the input voltage. For this problem, the input voltage is given as 90.
- Finally, calculate the Voltage Efficiency using the equation above:

Ev = OV / IV * 100

Inserting the values from above and solving the equation:

Ev = 75/ 90 * 100 = 83.33 (%)

**Example Problem #2: **

Using the same process as above, first define the variables required by the formula. In this case, these values are:

output voltage = 52

input voltage = 64

Entering these values yields:

Ev = 52 / 64 * 100 = 81.25 (%)