Schedule Performance Index Calculator

Calculate Schedule Performance Index



Formula

The formula to calculate the Schedule Performance Index (SPI) is:

\[ SPI = \frac{EV}{PV} \]

Where:

What is Schedule Performance Index?

The Schedule Performance Index (SPI) is a measure of project efficiency in terms of time. It is calculated by dividing the earned value (EV) by the planned progress (PV). An SPI value greater than 1 indicates the project is ahead of schedule, while a value less than 1 indicates the project is behind schedule.

Example Calculation

Let's assume the following values:

Using the formula to calculate the Schedule Performance Index (SPI):

\[ SPI = \frac{EV}{PV} = \frac{500}{450} = 1.1111 \]

The Schedule Performance Index (SPI) is 1.1111.