Timelines are a mission-critical tool for project managers. Whether you’re using project management software to get the job done or using a spreadsheet, the ability to create an accurate visual representation of what needs to happen, when, and in what order should be one of your PM superpowers.

A timeline is a visual representation of a list of events in chronological order. It includes a subject, data, and a linear scale where the unit distance of a line represents a proportional amount of time. A Gantt chart is a popular timeline used in project management to show a project schedule. In the Gantt chart, a list of tasks is displayed vertically, and the corresponding time intervals of each task—and sometimes their dependencies—are displayed horizontally.

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