Quick answer
Gantt Chart is bars on a timeline showing schedule and dependencies; PERT Chart is a network diagram of dependencies with probabilistic durations — the difference, and when each applies, below.
The 30-second answer
Gantt Chart: Bars on a timeline showing schedule and dependencies. PERT Chart: A network diagram of dependencies with probabilistic durations. The difference matters when you’re picking the right tool for the situation.
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Side by side
| Term | What it is | When to use |
|---|---|---|
| Gantt Chart | bars on a timeline showing schedule and dependencies | scheduling and communication |
| PERT Chart | a network diagram of dependencies with probabilistic durations | schedule-risk analysis |
Gantt Chart in depth
Bars on a timeline showing schedule and dependencies — use it scheduling and communication.
PERT Chart in depth
A network diagram of dependencies with probabilistic durations — use it schedule-risk analysis.
Which one when
- Use Gantt Chart when scheduling and communication.
- Use PERT Chart when schedule-risk analysis.
In practice they coexist — the skill is knowing which fits the moment.
Bottom line
Gantt Chart is bars on a timeline showing schedule and dependencies; PERT Chart is a network diagram of dependencies with probabilistic durations — the difference, and when each applies, below.
FAQ
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