PMP Formulas You Must Know (Fast Sheet)

Short, compact, zero fluff. These are the formulas that actually show up.

Earned Value (EVM)

• PV = Planned Value
• EV = Earned Value
• AC = Actual Cost

Variances

• CV = EV - AC
• SV = EV - PV

Indexes

• CPI = EV / AC
• SPI = EV / PV

CPI < 1 → over budget
SPI < 1 → behind schedule

Forecast

• EAC = BAC / CPI (most commonly tested)

Critical Path

• Longest path = shortest possible project duration

Float = LS - ES = LF - EF

Communication Channels

channels = n(n-1)/2

This shows up every year.

Expected Monetary Value (EMV)

EMV = probability × impact

• positive → opportunity
• negative → threat