Gantt Chart Maker — Task List to Gantt, Local Date Math
Turn a simple task list (name, start, end, dependencies) into a Gantt chart with correct local date math. Export PNG/SVG. Free and private.
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How to use Gantt Chart
- 1Add one task per line: name | start | end (YYYY-MM-DD dates).
- 2Optionally append | after:N to depend on task N — an elbow arrow is drawn from that task's end.
- 3Check the date axis and bars in the live preview; errors show a friendly message with the line number.
- 4Export PNG or SVG. Date math is pure civil-date arithmetic, correct in every timezone.
Gantt Chart FAQ
- How do I define tasks?
- One task per line: `name | start | end`, with optional `| after:N` to depend on task N (arrows are drawn from the predecessor's end). Dates use YYYY-MM-DD.
- Is the date math timezone-safe?
- Yes — dates are parsed with pure civil-date arithmetic (no JavaScript Date object in the result path), so bars land on the same days in every timezone.
- Can I show dependencies?
- Yes, `after:N` draws an elbow arrow from the end of task N to the start of the dependent task, and the chart validates that the referenced task exists.