Enter the Expected Utility with Perfect Information and the Expected Monetary Value without Information into the calculator to determine the Expected Value of Perfect Information. This calculator can also evaluate any of the variables given the others are known.

- Expected Monetary Value Calculator
- Expected Opportunity Loss Calculator
- Benefit to Cost Ratio Calculator

## Evpi Formula

The following formula is used to calculate the Expected Value of Perfect Information (EVPI).

EVPI = EUM - EMV

Variables:

- EVPI is the Expected Value of Perfect Information EUM is the Expected Utility with Perfect Information EMV is the Expected Monetary Value without Information

To calculate the EVPI, subtract the Expected Monetary Value without Information from the Expected Utility with Perfect Information. This will give you the value of having perfect information in decision making.

## What is an Evpi?

EVPI, or Expected Value of Perfect Information, is a concept in decision theory that calculates the maximum amount a decision-maker would be willing to pay for additional information before making a decision. It is the difference between the expected payoff with perfect information and the expected payoff under the current information. Essentially, it quantifies the value of having complete and perfect information when making a decision.

## How to Calculate Evpi?

The following steps outline how to calculate the Expected Value of Perfect Information (EVPI).

- First, determine the Expected Utility with Perfect Information (EUM).
- Next, determine the Expected Monetary Value without Information (EMV).
- Next, gather the formula from above = EVPI = EUM – EMV.
- Finally, calculate the Expected Value of Perfect Information (EVPI).
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

Expected Utility with Perfect Information (EUM) = 150

Expected Monetary Value without Information (EMV) = 120