Yes, Mermaid Chart has a permanent free tier alongside its paid plans. The free plan includes free plan: up to 3 diagrams, 15 AI credits per year on the free plan, and New accounts get a 7-day trial of the full editor, no credit card required.
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 free plan covers up to 3 diagrams and 15 AI credits a year. New accounts also get a 7-day trial of the full editor, with no credit card required, before settling onto the free plan's limits.
- Up to 3 diagrams on the free plan
- 15 AI credits per year
- 7-day full-editor trial, no credit card required
- Visual editor with live preview
- Real-time collaboration
- Plugin and VS Code integrations
Free Tier Value
The free plan covers up to 3 diagrams and 15 AI credits a year, with unlimited diagrams and 300 AI credits reserved for Plus at $10 per user a month. That makes the free plan's practical value a small slice of Plus - about $3/month - with a 7-day full-editor trial and no credit card required to start.
What's included in the free tier
Verified
- Free plan: up to 3 diagrams.
- 15 AI credits per year on the free plan.
- New accounts get a 7-day trial of the full editor, no credit card required.
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.
