PMP Formulas Cheat Sheet
All PMP exam formulas in one place — EVM, PERT, communication channels, EMV, and more.
All PMP Formulas
Estimating
| Formula | Purpose |
|---|---|
| PERT = (O + 4M + P) / 6 | Three-point estimate (weighted average) |
| σ = (P − O) / 6 | Standard deviation of a single activity |
| Variance = σ² | Variance of a single activity |
| Project σ = √(Σ variances) | Standard deviation of the project (critical path) |
Communication
| Formula | Purpose |
|---|---|
| Channels = n(n−1) / 2 | Number of communication channels for n stakeholders |
Risk
| Formula | Purpose |
|---|---|
| EMV = Probability × Impact | Expected Monetary Value (decision tree analysis) |
Financial
| Formula | Purpose |
|---|---|
| ROI = (Net Profit / Cost) × 100 | Return on Investment |
| NPV = Σ [Cash Flow / (1+r)^t] | Net Present Value (higher = better) |
| BCR = Benefits / Costs | Benefit-Cost Ratio (must be > 1.0) |
| PV = FV / (1+r)^n | Present Value of future money |
Procurement
| Formula | Purpose |
|---|---|
| PTA = [(Ceiling − Target Price) / Buyer Share] + Target Cost | Point of Total Assumption (FPIF contracts) |
Agile
| Formula | Purpose |
|---|---|
| Velocity = Story Points / Sprint | Team throughput per iteration |
| Sprints Remaining = Points Left / Velocity | Release forecasting |
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