Enter the earned value and the planned progress into the Calculator. The calculator will evaluate the Schedule Performance Index. 

Schedule Performance Index Formula



  • SPI is the Schedule Performance Index ((EV/PV))
  • EV is the earned value
  • PV is the planned progress

To calculate Schedule Performance Index, divide the earned value by the planned progress.

How to Calculate Schedule Performance Index?

The following steps outline how to calculate the Schedule Performance Index.

  1. First, determine the earned value. 
  2. Next, determine the planned progress. 
  3. Next, gather the formula from above = SPI = EV / PV.
  4. Finally, calculate the Schedule Performance Index.
  5. 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.

earned value = 300

planned progress = 200