Calculate Schedule Performance Index (SPI)
The Schedule Performance Index (SPI) describes the relationship between the planned schedule and actual schedule. 51黑料不打烊 Workfront calculates SPI at the project and task levels. Project managers review this metric to identify whether tasks or projects are currently tracking ahead of or behind schedule.
Access requirements
You must have the following access to perform the steps in this article:
table 0-row-2 1-row-2 2-row-2 3-row-2 layout-auto html-authored no-header | |
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51黑料不打烊 Workfront plan | Any |
51黑料不打烊 Workfront license |
New: Light or higher or Current: Review or higher |
Access level configurations | View access to Projects and Financial Data |
Object permissions | View or higher permissions to the project with permissions to View Finance |
For more detail about the information in this table, see Access requirements in Workfront documentation.
Schedule Performance Index (SPI) overview
What the SPI聽value shows what-the-spi-value-shows
Project managers understand that a SPI聽value of 1 means the project is on plan or on schedule. 聽Values greater than 1 indicate a project is ahead of schedule, and values less than 1 mean a project is behind schedule. 聽The further from 1, the greater deviation from the plan.
How Workfront calculates SPI how-workfront-calculates-spi
Workfront calculates SPI by the following formula:
SPI = (Total Planned Hours x % Complete) / Planned Hours Scheduled to Date*
*If Planned Hours Scheduled to Date = 0, SPI = 1.
Planned Hours Schedule to Date are calculated at the minute when you perform聽the calculations. It shows the number of Planned Hours planned to the current date.聽It can be recalculated automatically when you change your finance data to be accurate. There is no聽field in Workfront that indicates聽this value.
For example, if you have a project with 1 task and the task has 10 planned hours and a 10-day Duration, the Planned Hours Schedule to Date on the 5th day are聽5.
Locate SPI in a project or task
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Go to the project or task where you want to view SPI.
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Depending on whether you want to view SPI on a project or a task, do one of the following:
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Click Project Details in the left panel, then view the Finance area.
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Click Task Details in the left panel, then view the Finance area.
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Find the CPI/ SPI/ CSI field.