Gantt Chart Builder — Free Online Project Timeline Tool
Plan projects visually with an interactive Gantt chart. Add tasks, set dates, track progress, and see dependencies at a glance. All data stays in your browser — nothing leaves your device.
How to Use the Gantt Chart Builder
- Add tasks — give each task a name, start/end dates, progress percentage, and color.
- Set dependencies — link tasks that depend on each other using the predecessor field.
- Adjust the view — switch between days, weeks, and months. Zoom in/out for detail or overview.
- Track progress — update progress percentages. The chart renders bars proportionally.
- Add milestones — mark key dates like launches or deadlines with diamond markers.
- Export — download the chart as a PNG image to share with your team.
Why Gantt Charts Still Matter
Despite the rise of Kanban boards, Gantt charts remain the best way to visualize time-based project plans. They show not just what needs to happen, but when and for how long. This makes them essential for any project with deadlines and dependencies.
The visual timeline helps teams spot bottlenecks early, understand resource allocation, and communicate timelines to stakeholders who don't speak "Agile." A good Gantt chart turns abstract deadlines into concrete visual commitments.
Frequently Asked Questions
Enter the name of a predecessor task in the Dependencies field. The dependent task will be drawn after its predecessor finishes. This helps visualize the critical path.
Yes — drag the left or right edge of a task bar to adjust its start or end date. The task list inputs update automatically.
The critical path is the longest sequence of dependent tasks that determines the minimum project duration. Any delay on the critical path directly delays the entire project.
Use Cases
Project Timeline Visualization
Create visual project timelines that show task durations and dependencies, helping teams see the big picture of project schedules.
Sprint Planning for Agile Teams
Plan agile sprints by mapping out story points across a timeline, ensuring your team delivers features on schedule.
Resource Allocation Tracking
Track who is working on what and when, preventing overallocation and ensuring balanced resource distribution across projects.
Milestone Deadline Management
Mark critical deadlines and milestones on your timeline to keep everyone focused on key project deliverables.
Cross-Team Dependency Mapping
Map dependencies between different teams or departments to coordinate efforts and avoid bottlenecks in complex projects.