Gantt charts from a list of dates
Deckcell turns a list of activities with start and end dates into a Gantt chart in PowerPoint or Google Slides. Rows without an end date become milestones, the time scale runs from days to quarters, and a today line shows where the project stands.
Last updated 24 October 2026
Plans that update with the dates
Paste dates from Excel
Activity, start and end. Excel links send dates as ISO dates, so linked plans stay right.
Milestones
Leave the end date empty and the row becomes a diamond.
Day to quarter scale
Picked automatically from the span of dates, or set it yourself.
Today line
A dashed marker at any date, for status reports.
Frequently asked questions
How do I make a Gantt chart in PowerPoint?
With Deckcell, choose Gantt, paste activities with start and end dates, and insert. Read the guide.
Can a Gantt chart update from Excel?
Yes. Link the range in Excel; dates are sent as ISO dates, and Update links redraws the plan.
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