ERD Generator
AI entity-relationship diagrams. Describe your diagram in plain English below — free, no account needed. Output stays editable as draw.io XML and can be exported as SVG or PNG after signup.
Export anywhere
Copy the draw.io XML and import it into diagrams.net, draw.io desktop, or Confluence.
Edit visually
Click "Save & Edit Diagram" to open the result in AIDrawIO — drag, restyle, and re-prompt with better models.
Upgrade for more
Free tier: Gemini Flash, 5/hour. Sign up for GPT-5, Claude, unlimited, SVG/PNG export.
See it in action
ExampleEcommerce schema: users, orders, order_items, products, categories, addresses — with primary/foreign keys.
When to use this tool
Use it when you need a quick entity relationship diagram for database planning, schema reviews, or onboarding.
Use it for conceptual ERDs early in design or for more detailed schema drafts with keys and table relationships.
Use it when you want a database diagram that can still be refined visually after the first draft.
Example prompts
Prompt 1
Ecommerce schema: users, orders, order_items, products, categories, addresses — with primary/foreign keys.
Prompt 2
Multi-tenant SaaS schema with organizations, users, memberships, roles, workspaces, projects, tasks, comments, and audit logs.
Prompt 3
Marketplace data model with buyers, sellers, listings, orders, payouts, disputes, reviews, and messages plus junction tables where needed.
Prompt 4
Healthcare scheduling schema with patients, providers, appointments, insurance plans, claims, invoices, and clinical notes.
Prompt tips that improve results
Name the main actors, services, systems, or tables instead of describing the diagram vaguely.
Include boundaries, traffic direction, failure paths, or data stores when those details matter to the audience.
After generation, use a follow-up prompt to add labels, security controls, or a second level of detail instead of overloading the first prompt.
Good fit for technical docs
AIDrawIO is built around engineer-first diagram workflows. Generate the first version fast, keep the XML editable, and link the output into docs, reviews, runbooks, or design discussions.
Use category pages for broader discovery
If you are still deciding between diagram types, browse the broader AI diagram generator, technical diagram generator, and draw.io AI generator pages linked below.
Related resources
Go deeper with nearby tool pages, prompt libraries, examples, and guides for this diagram workflow.
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Switch to adjacent generators when you need a different level of detail or diagram style.
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Architecture Diagram Generator
Generate clean, editable software and system architecture diagrams. Describe the services, boundaries, and data flows — AI handles the layout.
Prompt libraries and examples
Copy proven prompts and browse concrete diagram patterns close to this workflow.
ERD Prompts
ERD prompts work best when they name the entities, relationships, and key attributes or constraints. These examples help you generate a clean first-pass schema diagram before you finalize table details.
Marketplace Payment Flow
Buyer → fraud detection → Stripe → fund splitting → seller payout with T+1 settlement
Event-Sourced Order Management
Kafka-based saga with OrderService, InventoryService, PaymentService — failed payment compensation
Guides and category pages
Learn the notation, best practices, and nearby commercial-intent pages around this diagram type.
ERD database design guide - guia AI
Esta guia resume buenas practicas de ERD database design guide para equipos tecnicos.
system design diagrams guide - guia AI
Esta guia resume buenas practicas de system design diagrams guide para equipos tecnicos.
AI Technical Diagram Generator
AIDrawIO focuses on technical diagrams engineers actually need: architecture diagrams, UML, ERDs, sequence diagrams, infrastructure maps, and cloud designs. Prompt first, then keep refining the result as an editable diagram.
AI Diagram Generator
AIDrawIO turns plain-English prompts into technical diagrams you can keep editing. Describe the system, process, or workflow you want, then export draw.io XML or share the result as SVG or PNG.
Best AI Diagram Generators
The best AI diagram generator depends on whether you need technical diagrams, docs integration, whiteboarding, or draw.io-compatible editing. AIDrawIO stands out when the priority is prompt-first generation plus editable technical output.
Want this for your team?
AIDrawIO Pro gives your whole team unlimited diagram generation, shared workspaces, version history, and access to GPT-5 and Claude.
See pricingOther diagram generators
Frequently asked questions
Can this create both conceptual and detailed ERDs?
Yes. You can start with just entities and relationships or include columns, primary keys, foreign keys, and junction tables for a more detailed schema diagram.
What should I include in an ERD prompt?
List the entities, the important relationships, and whether you want keys, attributes, or many-to-many junction tables shown.
Is this tool really free?
Yes. You get 5 free generations per hour with no account required. Sign up for unlimited access with GPT-5, Claude, and Gemini Pro.
What diagram formats can I export?
The generated diagram is draw.io XML. Copy it and import it into draw.io or diagrams.net. Sign up to also export as SVG or PNG directly.
Which AI models are used?
The free tier uses Gemini Flash. Subscribers get access to GPT-5, Claude Sonnet, Gemini Pro, and more — with better layout quality.
Can I edit the generated diagram?
Copy the XML and open it in draw.io, or click "Save & Edit Diagram" to open it in AIDrawIO where you can visually edit, restyle, and re-prompt.
How do I get started?
Describe your diagram in the box above, then click Generate (or press ⌘↵). The placeholder text shows you the kind of detail that works best.
Will my prompts be used to train AI?
No. Prompts are sent directly to the AI provider and are not stored or used to train models by AIDrawIO.