Gantt chart vs timeline
A Gantt chart gives every task its own row and a bar for its dates, so a team can plan and run the work. A timeline puts the key events and phases along a single line, so an audience can take in the schedule in a few seconds. Use a Gantt chart to run a project and a timeline to explain it.
By the NeoGantt team · Updated
What’s the difference between a Gantt chart and a timeline?
A timeline is the older, simpler idea: a single axis of time with events and periods placed along it. A history textbook’s strip of dates is a timeline, and so is the one-line “roadmap” slide in a pitch deck. It answers what happens when.
A Gantt chart is a particular kind of timeline built for managing work. Each task gets its own row and a bar from its start date to its end date, grouped into phases, with milestones marked. It answers what happens when, how long it takes, what overlaps, and who’s doing it. Every Gantt chart is a timeline; most timelines aren’t Gantt charts.
Gantt chart vs timeline, side by side
| Gantt chart | Timeline | |
|---|---|---|
| Main job | Planning and running the work | Explaining the schedule |
| Audience | The people doing the work, and anyone who needs detail | Clients, executives, the public |
| Layout | One row per task, bars on a date grid | One line (or a few swimlanes) with events and phases along it |
| Detail | Tens to hundreds of tasks | Five to fifteen items |
| Shows durations | Yes, for every task | For phases, if at all |
| Shows overlaps | Clearly | Rarely |
| Shows owners and progress | Often | Almost never |
| Updated | Weekly or more, as work moves | When a key date changes |
| Typical home | Gantt software, project tools, spreadsheets | Slides, reports, websites, design tools |
When to use a Gantt chart
- Several pieces of work run at the same time and you need to see how they overlap.
- People outside your team own some tasks, and their dates affect yours.
- The plan will change and you need to move tasks and see the effect.
- You need to answer “what’s happening this week, and who’s on it?”
When to use a timeline
- The audience needs the shape of the project in thirty seconds, not the detail.
- You’re presenting: a slide in a proposal, a board paper, a page on a website.
- The story is a sequence of events rather than overlapping work, such as a company history or a product’s release dates.
- Dates are fixed and rarely change, so a static graphic won’t go stale quickly.
One plan, shown two ways
The usual advice is “Gantt for the team, timeline for stakeholders”. That’s right about audiences, but it leaves you with two documents holding the same dates, maintained separately. The timeline gets redrawn by hand in a slide, and the first time a date moves, it’s wrong.
Keep one plan instead, and decide what each audience needs to see from it. For a ten-week website project, that looks like this:
| Team’s working view (Gantt) | Client summary (timeline-like) |
|---|---|
| Every task, including internal ones like staging setup and design crits | Four phases and the main task in each |
| All milestones | The approvals the client gives, and launch |
| Owners and progress on every row | The client’s own tasks, clearly marked |
| Zoomed to days or weeks | Zoomed to weeks or months, fitted to one page |
Often the client view can simply be the Gantt chart itself, kept at the right level of detail: phases, the main tasks, the client’s tasks and the milestones. Twenty well-named rows read almost as easily as a timeline, and they still show the client what they need to do and when. The fine-grained task list lives in the team’s task tracker instead. How to pitch that level is covered in how to share a Gantt chart with clients.
Tools for timelines and Gantt charts
For presentation timelines, the specialist tools do a better job than a Gantt tool will. Lucen Timeline (formerly Office Timeline) builds presentation timelines inside PowerPoint, Preceden is made for timelines of events and periods, and design tools like Canva and Miro have timeline templates. If what you need is a polished graphic of a few fixed dates, one of those is the right pick.
For a plan that changes, a Gantt tool is the better starting point, because you edit it by moving bars rather than redrawing a graphic. Spreadsheets work at a pinch: see our guides to Gantt charts in Excel and in Google Sheets.
For the basics of the format itself, start with what is a Gantt chart.