Time Series
Gantt Chart
Horizontal bars on a time axis showing task durations, dependencies, and overlap.
Project Schedule
12-week development plan
View data (8 rows)
| Start | End | Phase | Task |
|---|---|---|---|
| 2025-01-06 | 2025-01-24 | Planning | Research |
| 2025-01-13 | 2025-02-07 | Planning | Design |
| 2025-01-27 | 2025-02-21 | Development | Frontend |
| 2025-01-27 | 2025-02-28 | Development | Backend |
| 2025-02-17 | 2025-03-07 | QA | Testing |
| 2025-03-03 | 2025-03-14 | Launch | Deployment |
| 2025-03-10 | 2025-03-21 | Launch | Monitoring |
| 2025-03-17 | 2025-03-21 | Review | Retrospective |
Use a gantt chart when…
- Project planning and scheduling
- Showing task durations and dependencies
- Resource allocation
Avoid when…
- Simple timelines without duration
- Zero-duration milestones (use event-timeline)
- Non-temporal data
Data it needs
| Property | Value |
|---|---|
| Min Rows | 4 |
| Min Columns | 3 |
| Column Types | stringdatedate |
Visual anatomy
Marks
rectangle
Channels
position-x (start)length (duration)color-hue (category)
Axes
x-timey-task
Guiding principles
Consider instead
Common mistakes
Too many tasks cluttering the view
Not showing dependencies as arrows between dependent task bars
History
Developed by Henry Gantt around 1910 for production scheduling.
Accessibility notes
List tasks with start and end dates as text and describe overlaps. Pair phase color with a redundant text label or pattern fill so phase grouping survives color-vision deficits.
Related reading
Got data? Let's see what works.
Drop your CSV. You'll get a Gantt Chart plus four alternatives - ranked by which one actually fits your data best.