CPM Network Diagram Calculator – Free Project Management Tool
Critical Path Method (CPM) Masterclass
Interactive Network Analysis, Gantt Chart & Study Guide for CMA Professionals
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Upload large projects instantly.
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Download Matrix for offline study.
Quick Analysis Insights
Interactive Network Diagram
Project Gantt Chart & Slack Map
Visual representation of the schedule. Striped bars represent Slack (Float) time.
Mathematical Float Ledger
| ID | Name | Dur. | Deps | ES | EF | LS | LF | Float | Action |
|---|
How to Solve CPM Problems for Exams
The Critical Path Method (CPM) is a core topic in professional finance and management exams. It helps project managers identify the longest sequence of dependent activities to determine the shortest possible completion time.
Earliest Finish (EF)
Latest Start (LS)
Total Float / Slack
Step-by-Step Solving Algorithm
Start from left to right. Activities with no predecessors start at Time 0.
Move from Left to Right. If an activity has multiple predecessors merging into it, its ES is the Maximum (Highest) EF of all its immediate predecessors.
Move from Right to Left. If an activity is a predecessor to multiple tasks, its LF is the Minimum (Lowest) LS of all its immediate succeeding activities.