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Schedule Performance Index (SPI)
Project Management
SPI measures schedule efficiency by comparing earned value to planned value.
Definition
SPI measures schedule efficiency by comparing earned value to planned value.
Formula
SPI = EV / PV
Explanation of Variables
EV = Earned Value
PV = Planned Value
PV = Planned Value
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Result: —
Worked Example
EV = 80,000
PV = 100,000
SPI = 0.8
PV = 100,000
SPI = 0.8
Industry Use Case
Used to track whether a project is ahead or behind schedule.
Related Formulas
Cost Performance Index(CPI)
Project Management
CPI measures cost efficiency by comparing earned value with actual cost.