Cost Performance Index Formula |
| \( CPI \;=\; \dfrac{ EV }{ AC } \) |
| Symbol |
| \( CPI \) = Cost Performance Index |
| \( AC \) = Actual Cost |
| \( EV \) = Earned Value |
Cost performance index, abbreviated as CPI, is a measure of the cost efficency of budgeted resources expressed as the ratio of earned value to actual cost.
