Gantt chart
Horizontal intervals locate tasks within a schedule.
Getting the exhibition ready
Intervals run from the start of the first date to the start of the end date.
Illustrative dataView data4 records
| Item | Group | September | Start (Sep) | End (Sep) |
|---|---|---|---|---|
| Research | Planning | 8 | 1 | 9 |
| Design | Production | 11 | 6 | 17 |
| Production | 5 | 17 | 22 | |
| Install | Production | 5 | 23 | 28 |
When it fits
See when work starts, ends, and overlaps.
What you need
Named tasks with start and end dates.
Watch for
Bars alone do not show dependencies or whether the plan is achievable.
In practice

Sources and accessibility
The authored example uses illustrative data. Published references retain their original information and presentation.
- Mermaid · Gantt diagrams
- GanttProject Developers · A project schedule in GanttProject
- W3C WAI · Accessible descriptions for complex images
Use Tab to reach controls and the data view. Native selects support arrow keys. All values are available in the data view; color and hover are never the only way to read the example.