Yes, Mermaid Chart has a permanent free tier alongside its paid plans. FreeTier.co estimates the free tier at about $3.00/mo, and no credit card is required to sign up.
About
Mermaid Chart is a diagramming application that turns text, Markdown-style syntax, or natural-language prompts into rendered diagrams. It supports flowcharts, sequence diagrams, Gantt charts, ER diagrams, timelines, mind maps, org charts, state diagrams, Git graphs, user journeys, class diagrams, pie charts, quadrant charts, and block diagrams.
The product includes a visual editor, AI-assisted creation, code-based editing, real-time collaboration, plugin integrations, and VS Code support. It is aimed at developers, technical writers, analysts, educators, and other teams that need to create and share diagrams in documentation, presentations, and internal workflows.
- Text-to-diagram generation
- Markdown-style Mermaid syntax
- Visual editor with live preview
- Real-time collaboration
- Plugin and VS Code integrations
- Diagram types for systems, workflows, and data
- Open-source Mermaid.js roots
Free Tier Value
This free tier is a capped starter offering, not an unlimited one: it gives a small number of diagrams, limited diagram size, limited AI, and one team/project creation. The cheapest paid plan is Plus at $10 per user per month, so this looks worth about $3/month - roughly a third of the entry paid tier - with no credit card friction mentioned on the page.
What's included in the free tier
Verified
Details aren't itemized for this entry yet - check the pricing page below for the latest.
See Mermaid Chart pricing for current limits.
Paid plans
Plus
- diagrams
- unlimited
- diagram size
- limitless
- AI credits/year
- 300
- Unlimited diagrams
- Limitless diagram size
- 300 AI credits per year
- All Basic features
Premium
- diagrams
- unlimited
- diagram size
- limitless
- AI credits/year
- 2,000
- viewer seats
- unlimited
- teams & projects
- unlimited
- Unlimited free viewer seats
- Unlimited teams & project creation
- 2,000 AI credits per year
- Robust security with SSO
- All Plus features
Enterprise
- diagrams
- unlimited
- diagram size
- limitless
- AI credits/year
- unlimited*
- viewer seats
- unlimited
- teams & projects
- unlimited
- Custom contract & invoicing
- Secure diagram ownership (IP transfer to admin)
- Dedicated Customer Success Manager (CSM)
- All Premium features
Pricing extracted from Mermaid Chart's pricing page. Always verify current pricing before committing.
Common questions
Is Mermaid Chart free forever?
Yes. Mermaid Chart has a permanent free tier alongside its paid plans, though the allowance typically resets each month.
Does Mermaid Chart require a credit card?
No. You can start on Mermaid Chart's free tier without entering card details.
What happens when you exceed Mermaid Chart's free tier?
You move to a paid plan. Mermaid Chart's cheapest paid plan is Plus at $10 / seat / month.
What is Mermaid Chart's free tier worth?
Mermaid Chart's free tier is worth about $3.00 per month. That maps to an FTV score of 49/100. The FTV score is explained at freetier.co/ftv.
