⏱️ SPI Calculator

Calculate the Schedule Performance Index (SPI = EV ÷ PV) to measure schedule efficiency. SPI above 1.0 means ahead of schedule; below 1.0 means behind.

Earned Value (EV) (value of work performed)

Planned Value (PV) (value of work scheduled)

Formula: SPI = EV ÷ PV. SPI > 1 → ahead of schedule, SPI < 1 → behind schedule.

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