top of page
< Back

Project Management

Save this article  > 

Schedule Performance Index (SPI): An Introduction

Quincy Yarbrough
Publication date:
June 23, 2021
Article Summary: 

Schedule Performance Index (SPI): An Introduction

The Schedule Performance Index (SPI) is part of a greater project performance measurement method called earned value management (EVM). It is a ratio of earned value to planned (or actual) value, which reflects a project being on schedule, behind schedule or ahead of schedule. SPI measures the value of work completed by comparing the progress we planned to make to the actual progress made. To calculate the SPI, it is important to understand the key terms and how to calculate it for yourself.
Earned Value Management (EVM) is a technique used to measure the performance of a project. The schedule performance index (SPI) is a ratio of earned value to planned value, and is calculated by dividing this earned value integer by the planned value integer. The cost performance index (CPI) is the measure of the value of work in comparison to cost, and is different from the schedule performance index in that CPI measures cost efficiency while SPI measures time efficiency. To calculate SPI, the project managers must find the earned value (EV) and the planned value (PV), and then divide the two by the earned value integer.


schedule performance index, earned value management, schedule performance, schedule variance, project management, project management plan, schedule variance percent complete

Source Citation: 
Quincy Yarbrough
Schedule Performance Index (SPI): An Introduction
June 23, 2021
Did you find this article useful? 
Your feedback is important not only to us, but to all the other key players in the condo industry.  Help us by letting us know if this article is relevant and useful.  This will help us prioritize articles that provide helpful guidance to other key players like you. 

Please login to use this feature.

bottom of page