Calculators

FlowGantt | Interactive Gantt Chart Manager for Project Planning

FlowGantt - Advanced Gantt Chart Manager

FlowGantt

Advanced Gantt Chart Manager

How to Use ▼

  • Start with a pre-built example project or create your own tasks
  • Add tasks with name, duration, category, and priority level
  • Edit tasks: click the "Edit" button in the task list or double-click a task bar on the chart
  • Set dependencies between tasks (hover over help icons for explanations)
  • Toggle between Hours, Days, or Weeks time scale
  • Navigate the chart: click and drag to pan through your project timeline
  • Mobile: swipe with one finger to pan the chart
  • Critical path is automatically calculated and highlighted in red
  • View slack/float time to see scheduling flexibility for each task
  • Explore the glossary to learn project management terms
  • Generate reports to analyze your project schedule
  • Export your Gantt chart as PNG for documentation

📖 Project Management Glossary ▼

Critical Path
The longest sequence of dependent tasks that determines the minimum project duration. Any delay in critical path tasks delays the entire project.
Slack/Float
The amount of time a task can be delayed without affecting the project completion date. Tasks on the critical path have zero slack.
Dependency (FS, SS, FF, SF)
Relationships between tasks. FS (Finish-to-Start): most common, task B starts after A finishes. SS (Start-to-Start): both start together. FF (Finish-to-Finish): both finish together. SF (Start-to-Finish): rare, task B finishes when A starts.
Gantt Chart
A visual project management tool showing tasks as horizontal bars along a timeline, illustrating start dates, durations, and dependencies.
Milestone
A significant point or event in the project, typically with zero duration, marking the completion of a major phase or deliverable.
Early Start/Finish
The earliest possible time a task can start or finish based on predecessor dependencies.
Late Start/Finish
The latest time a task can start or finish without delaying the project completion.

🧮 Critical Path Formulas ▼

Early Start (ES)
ES = Max(Predecessors' Early Finish)
Early Finish (EF)
EF = ES + Duration
Late Finish (LF)
LF = Min(Successors' Late Start)
Late Start (LS)
LS = LF - Duration
Total Float/Slack
Float = LS - ES = LF - EF
Critical Path Condition
If Float = 0, then task is on Critical Path

📊 Project Analysis Report ▼

Click "Generate Report" to analyze your project

Tasks & Dependencies

Design
Development
Testing
Planning
Documentation
Deployment
Critical Path
No tasks yet. Load an example project or add your first task!

📚 Load Example Project

Choose a pre-built project to see FlowGantt in action:

💻 Software Development
Complete software project lifecycle from planning to deployment
🏗️ Construction Project
Building construction phases with dependencies
🎉 Event Planning
Conference organization from concept to execution

✏️ Edit Task

Gantt Chart Manager | Free Online Tool | FlowGantt

Free interactive Gantt chart tool. Create, edit, and visualize tasks with dependencies, critical path analysis, and real-time updates. Perfect for construction, software development, and event planning projects.

Price: Free

Price Currency: $

Operating System: Single Page Application

Application Category: Scheduler

Editor's Rating:
5
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