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Construction
Critical Path Method (CPM) Calculator
Calculate Early Start, Early Finish, Late Start, Late Finish, Total Float, Critical Activities, and the Critical Path for your construction schedule.
Project Activities
Enter your project tasks, durations, and dependencies.
| Activity ID | Activity Name | Duration (Days) | Predecessor | Action |
|---|---|---|---|---|
Calculation Results
Output details of critical path analysis and activity floats.
Project Duration
—
Total working days to complete project.
Critical Path Sequence
—
Sequence of critical activities with zero float.
Ready to Calculate
Enter your activities, durations, and predecessors, then click "Calculate CPM" to view the early/late schedules and critical path.
| Activity ID | Early Start (ES) | Early Finish (EF) | Late Start (LS) | Late Finish (LF) | Total Float | Status |
|---|---|---|---|---|---|---|
| Enter activity inputs and click "Calculate CPM" to populate floats and schedules. | ||||||