Design clean database schemas faster
Generate entity relationship diagrams with AI, then refine entities, attributes, keys, and cardinalities with simple controls. Preview updates instantly and export in seconds.
Why use this ERD maker
Purpose-built for database design with AI assistance
AI-first modeling
Describe your domain and get entities, attributes, PK/FK tags, and relationships instantly.
Clear keys and roles
Highlight primary, foreign, and unique keys so constraints are obvious at a glance.
Cardinality and types
Set zero-or-more through exactly-one and mark identifying vs non-identifying relationships.
Flexible layouts
Switch Left-to-Right, Top-to-Bottom, or reverse directions to fit your space.
Instant preview
See every edit reflected in the diagram in real time as you refine your schema.
Zoomable canvas
Zoom and pan for complex models without losing readability.
Bring your data
Type entities
Enter tables, attributes, and key roles directly in the editor.
Paste schema
Paste columns from a spreadsheet or notes to map entities fast.
Upload files (Pro)
Import common files to prefill entities and attributes for your ERD.
Quick start
Load the sample CUSTOMER–ORDER–PRODUCT model to learn the flow.
Share and export
Download image
Export your ERD as PNG or SVG for docs, slides, or tickets.
Share link
Send a view link so teammates can review your diagram anytime.
Embed anywhere
Add the ERD to your site or wiki with a simple embed code.
About this ERD tool
Make clean ER diagrams without the busywork. Describe your data, and AI builds entities, keys, and relationships you can refine. Adjust layout, font size, and labels. Preview changes instantly. Export or share with one click. Designed for database design teams.
- ✓Built for ER modeling, not generic drawing
- ✓AI suggestions jump-start accurate schemas
- ✓Simple controls for keys, cardinality, and types
- ✓Flexible LR/TB layouts and zoomable canvas
- ✓Fast export for docs, wikis, and reviews
Quick facts
How it works
From idea to ER diagram in minutes
Describe your model
Tell the AI your entities, key fields, and how they relate. Mention cardinalities and identifying links if known.
Customer places Orders; Order contains OrderItems; Product is included in OrderItem.
Review entities & keys
Confirm names, attributes, and PK/FK/UK roles. Add comments on important columns.
ORDER(order_id PK, customer_id FK, order_date).
Define relationships
Set source/target, cardinality, and relationship type. Label connections for clarity.
ORDER_ITEM → PRODUCT: many-to-one, non-identifying, label: included in.
Tidy layout & export
Choose Left-to-Right or Top-to-Bottom, adjust font size, then download or share.
Layout: LR, Font: Medium, Export: SVG.
Use cases
Built for teams who design and evolve data models
Product and user data models
Map accounts, users, roles, subscriptions, and billing flows to keep engineering aligned.
Orders, inventory, and catalog
Design order pipelines, stock control, and product hierarchies for storefront and warehouse systems.
Warehouse staging models
Sketch star schemas, slowly changing dimensions, and fact tables before implementation.
Teach ERDs clearly
Show students entities, keys, and cardinality with an approachable, interactive editor.
Templates
Start with professionally designed templates
E-commerce Order Management ERD Template
This template visualizes how customers, orders, items, payments, shipments, inventory, coupons, addresses, and returns connect across the order lifecycle.
Online Store Products & Inventory ERD Template
Visualize how products, categories, inventory, orders, customers, suppliers, and warehouses connect in one clear ERD.
Shopping Cart & Checkout ERD Template for E‑commerce
Visualizes users, carts, items, orders, payments, shipping, coupons, and inventory across the checkout lifecycle.
SaaS User-Team-Subscription erd Template for Clean Data Models
Visualizes Users, Teams, Memberships, and a single Team Subscription with clear PK/UK/FK keys, roles, and ownership.
Multi-Tenant SaaS Database ERD Template
Visualize tenants, organizations, users, roles, permissions, plans, subscriptions, and resources—covering shared vs. isolated tenancy models.
CRM Contacts–Leads–Deals ERD: a clear, scalable model
This erd visualizes how Companies, Contacts, Leads, and Deals relate, including the many-to-many link between Contacts and Deals via Deal_Contact.
View All Templates
Browse the full library to find more templates tailored to your chart.
Traditional vs AI-assisted ERD
Model faster with guidance and instant structure
Traditional ERD workflow
- ✗Manual shape drawing and alignment
- ✗Re-typing attributes and keys repeatedly
- ✗Hard to keep cardinalities consistent
- ✗Layout tweaks consume time
- ✗Limited guidance on identifying vs non-identifying
AI-assisted ERD with MakeCharts
- ✓Auto-generate entities, attributes, and PK/FK/UK from a brief
- ✓Suggest cardinalities and relationship labels
- ✓One-click layout direction for tidy diagrams
- ✓Instant preview reduces rework
- ✓Clear prompts help choose identifying or non-identifying types
ERD maker FAQs
What is an ERD maker for database design?
It’s a tool that helps you model entities, attributes, and relationships for a database. You can define keys, set cardinalities, preview the layout, and export your entity relationship diagram for implementation or review.
How does the AI ERD tool generate diagrams?
You describe your domain in plain language. The AI proposes entities with attributes, PK/FK/UK keys, and relationships with cardinality and type. You review and refine, with instant previews to validate the structure.
Can I set Left-to-Right or Top-to-Bottom layouts?
Yes. Choose LR, RL, TB, or BT from Display Settings to match your canvas or documentation style. The diagram reflows automatically to keep connections readable.
Does it support identifying vs non-identifying relationships?
Yes. When creating relationships you can choose Identifying or Non-identifying and specify cardinalities like exactly one, zero or more, or one or more.
Is there a free ERD maker version?
Yes. You can start free, create ERDs, customize layouts, and download images. Pro adds AI file uploads and advanced convenience features.
Accessible by design
- ✓Readable fonts and adjustable sizes
- ✓Keyboard-friendly controls for editing
- ✓High-contrast colors for lines and labels
- ✓Zoom and pan for low-vision users
- ✓Concise labels to aid screen readers
Your data, your control
- •Diagrams are private by default until you share a link
- •You can download, edit, or delete your work anytime
- •We don’t sell your data or diagrams
- •Uploads are used only to build your ERD experience
Design your ERD now
Start free, then accelerate with AI when you need it