Create a free Gantt chart online in minutes
Gantto is a free online Gantt chart generator: drag to plan tasks and milestones on a timeline, while the underlying Mermaid gantt code stays the source of truth — edit visually or in raw code, then share with your team.
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Free to use · No credit card required
Everything you need to build a Gantt chart online
Drag & drop
Move and resize task bars right on the timeline. Milestones, sections, and dependencies included.
Raw Mermaid
Every chart round-trips to clean Mermaid gantt syntax you can paste into any doc, wiki, or README.
Collaborate
Invite teammates as editors or viewers on your Gantt chart. Save manually, anytime.
Frequently asked questions
Is Gantto free to use?
Yes. Gantto is a free Gantt chart maker — sign in with Google and start planning, no credit card required.
What is Mermaid gantt syntax?
It's the plain-text format Gantto's charts are built on, so every chart you create can be pasted into any doc, wiki, or README.
Can I share my Gantt chart with my team?
Yes — invite teammates as editors or viewers, or share a read-only link to your Gantt chart.
Do I need to install anything?
No. Gantto runs entirely in your browser.