Free AI diagram generators12 AI tools for architecture, mind maps, org charts and more
All the free AI diagram generators in one list, each with a free plan on its own pricing page. Part of the AI tools list on RankDude. The full list, free or paid, is on the AI diagram generators page.
- Submit your free AI diagram generatorRun one? Send it in and I’ll add it to the list and queue it for a hands-on test.Submit it →
Boardmixboardmix.comAI whiteboard that drafts mind maps and flowcharts from a topic.Listed in 2 lists
Createlycreately.comDiagramming software with AI to build process maps, org charts and cloud architecture diagrams.Listed in 2 lists
Diagramming AIdiagrammingai.comCreates editable Mermaid, PlantUML, GraphViz, D2 and Excalidraw diagrams with AI.Listed in 1 list
Erasereraser.ioCreates technical diagrams from text using AI.Listed in 2 lists
Figmafigma.comCollaborative interface design tool with an AI agent, Figma Make prototypes and AI image tools for product teams.
FlowcastGPTflowcastgpt.comAI diagram generator that converts text into diagrams.Listed in 1 list
Miromiro.comVisual workspace whose AI turns a prompt, doc or data into diagrams, timelines or decks.Listed in 2 lists
Napkin AInapkin.aiTurns text into diagrams, infographics and visuals for slides and documents
Piktochartpiktochart.comVisual design tool whose AI presentation maker drafts editable decks from a topic or file
ProcessOnprocesson.ioOnline drawing tool with AI one-click mind maps and flowcharts.Listed in 1 list
Taskadetaskade.comWorkspace app with a no-code builder for agents and automations, for individuals and small teams.Listed in 2 lists
Whimsicalwhimsical.comDiagramming and wireframing tool with AI to create diagrams.Listed in 2 lists
Other free AI design tools
Still looking? Browse 119 free AI design tools across 14 lists: presentation makers, ad generators, design tools and more.
- Free AI presentation makersTools that build a slide deck from a prompt, a document or an outline.23 tools
- Free AI ad generatorsTools that make ad creatives with AI: static images, copy, avatar and UGC-style videos, sized for each platform.15 tools
- Free AI design toolsDesign apps that draft layouts, pages, graphics and whole brand kits from a prompt, then let you edit every piece by hand.19 tools
- Free AI 3D model generatorsTools that make 3D models from a text prompt or from a picture: build an object, add textures, export a file for a game or a 3D printer and turn a photo into a model.12 tools
- Free AI design generatorsTools that make designs from a prompt: make a layout, a social post, a flyer or a brand graphic, and change colours and text.11 tools
- Free AI slide generatorsTools that make slides from a prompt or a document: write the slide text, lay out each slide, add pictures and export the deck.10 tools
- Free AI flowchart generatorsTools that turn a description into a flowchart: lay out steps and decisions, connect them with arrows, edit the result and export it as an image or file.9 tools
- Free AI floor plan generatorsTools that draw floor plans: make a plan from a text brief, lay out rooms, add measures and furniture and change a plan you already have.8 tools
- Free AI infographic generatorsTools that make infographics: turn a topic, a text or data into a designed graphic with icons, charts and sections.8 tools
- Free AI mockup generatorsTools that create mockups: place a design on a product, screen or packaging, produce scene and device mockups, and export the image.8 tools
- Free AI CAD toolsTools that help produce CAD models: create a 3D part from a description or sketch, edit dimensions, and export files for printing or machining.6 tools
- Free AI garden design toolsTools that plan a garden from a photo or a description: suggest layouts, plants and features, show the garden redesigned and give a plant list.6 tools
- Free AI poster makersTools that make posters from a prompt or a template: lay out text and pictures, make an event poster, change the style and export for print or screens.5 tools
AI statistics, live monitors and how I test
- AI statisticsVisits, searches and demand for every category, monthly to October 2026.
- Live monitorsUptime, page speed, security and prices of the tested tools, checked every day.
- CheckersThe tools used during every review, explained one by one.
- Data sourcesWhere the monthly statistics come from and how they are read.
- How I testOne written procedure per category, the same scoring for every tool in it.
- Submit your AI toolNot on the list, or ready to be tested? Send it in for the next pull.
Free AI diagram generators: questions people ask
What is a free AI diagram generator?
Tools that turn a description into a diagram: draw architecture and network diagrams, mind maps, org charts and process maps, edit the result and export it as an image or file. On this page every tool also has a plan that costs nothing for as long as you like, read from its own pricing page.
How many AI diagram generators have a free plan?
12 of the 18 AI diagram generators RankDude lists, as of 1 November 2026. The full list, free or paid, is on the AI diagram generators page.
What does the free plan usually limit?
Credits, outputs or projects per month, a watermark, lower resolution or fewer seats. The limits differ by tool; the pricing page each status was read from says exactly what the free plan includes.
Is this a ranking of free AI diagram generators?
No. The list follows the site's one order: tools I have tested first, then the rest by how well known they are. Only a tested tool carries a grade.
Written by Miles Foster, Owner and tester, RankDude.
All free AI design tools