How to make a timeline
Seven steps from a pile of dates to a timeline people understand at a glance, with the design decisions that matter most.
1. Decide what the timeline is for
A timeline answers a question: How did we get here? What happens when? What caused what? Write the question down. It decides which events make the cut and it usually makes a better title than the topic name.
2. Collect events, then cut
List everything first, then keep the events that answer your question. For a slide, 5–12 events is the sweet spot. Give each one a short title — five words or fewer — and put the detail in a note.
3. Get the dates right
Check each date against a reliable source and keep the precision honest: a year when you only know the year, "c." when it's an estimate. Mixing BC and AD? Remember there's no year zero.
4. Choose a layout
| Layout | Best for |
|---|---|
| Horizontal | Slides, posters, stories with fewer than a dozen events |
| Vertical | Phones, web pages, events with long notes, very uneven spans |
| Gantt | Plans where durations and overlaps matter — see the Gantt chart maker |
| Roadmap lanes | Work grouped by team or theme — see the roadmap maker |
5. Choose the scale
A to-scale timeline shows tempo: bursts of activity, long quiet stretches. It also crowds clustered events together, which is where most timelines go wrong. Try both options below.
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Rules of thumb: stay to scale whenever you can, widen the page (or zoom in the editor) before you shorten titles, and switch to even spacing only when one cluster would otherwise be unreadable — then say so in the subtitle.
6. Label and colour
Colour by a single dimension — theme, team, country — and include a legend. Use no more than five or six colours; the TimelineForge palette is chosen to stay distinguishable for most colour-blind readers.
7. Title, source, export
Give the timeline a title that states the point, add the source or "updated" date in the subtitle, then export: PNG for documents, SVG for print, PDF for handouts, PowerPoint for slides.
Timeline-making questions
What are the steps to make a timeline?
Decide what question the timeline answers, collect events with dates, choose a scale and layout, place the events, label them briefly, add a title and legend, and check every date against a source.
How many events should a timeline have?
For a slide or poster, 5–12. Beyond about a dozen, labels crowd each other; split the story into two timelines or use a vertical layout with room for notes.
Should a timeline be to scale?
Usually yes, because the gaps between events carry meaning. Use even spacing when the events are extremely unevenly distributed (for example deep prehistory next to the 20th century) and say so in the subtitle.
How do I make a timeline in Word, Google Docs or PowerPoint?
The fastest route is to build it here and export: PNG for Word and Google Docs, and PowerPoint (.pptx) for slides — the .pptx is made of editable shapes, and Google Slides can import it.
What is the difference between a timeline and a chronology?
A chronology is a list of events in date order. A timeline plots them on a scaled axis so you can see gaps, clusters and overlaps at a glance.