Create ER Diagram Online
Entity Relationship Diagram Maker
Also available in ClickUp
Need more than a free tool? Try ClickUp Whiteboards
This free ER diagram maker gives you a quick way to visualize database schemas for individual projects. ClickUp's Whiteboards does everything this tool does and more, with real-time team collaboration, infinite canvas, task linking, and seamless integration with your project management workflow. Use this free tool for solo work. Upgrade to Whiteboards when your team needs to diagram together.
Learn more about ClickUp's Whiteboards featureDATABASE DESIGN
Build Better Databases
Visualize your data structure before writing a single line of SQL
No Account. No Download. Just Start.
Click to add entities, drag to connect relationships, export when you're done. The fastest path from idea to diagram with zero friction—no signup walls, no tutorial videos, no feature gates.
Designed for Beginners and Pros
Crow's foot notation is built in, primary and foreign keys are one click away, and templates give you a running start. Whether you're a student learning databases or a developer sketching a new schema, the tool adapts to you.
Your Data Stays Yours
100% client-side means your diagrams never touch a server. Export to PNG for documentation, SVG for design tools, or JSON to save your work—all processed locally in your browser.
HOW IT WORKS
Everything You Need to Create ER Diagrams
From entities and attributes to relationships and exports, all the essentials in one place
Click anywhere on the canvas to add an entity rectangle. Double-click to name it—User, Product, Order, whatever your schema needs. Drag entities around to organize your layout. Select and delete with keyboard shortcuts. It's as intuitive as sketching on paper.
Click anywhere on the canvas to add an entity rectangle. Double-click to name it—User, Product, Order, whatever your schema needs. Drag entities around to organize your layout. Select and delete with keyboard shortcuts. It's as intuitive as sketching on paper.
SEE HOW WE COMPARE
Free ER Diagram Maker vs. the Competition
No signup walls. No feature limits. Just the fastest path from idea to diagram.
| Feature |
ClickUp
Free
|
Lucidchart |
dbdiagram.io |
SmartDraw |
|---|---|---|---|---|
| No signup required | Yes | Account needed | Yes | Account needed |
| Visual drag-and-drop | Yes | Yes | Code only | Yes |
| Mobile-optimized | Touch-enabled | Desktop-first | Desktop-first | Desktop-first |
| Export to PNG/SVG | Free | Paid only | Yes | Trial only |
| Crow's foot notation | Built-in | Yes | Yes | Yes |
| Pre-built templates | 4 templates | Library | No | Yes |
| Client-side privacy | 100% | Server-stored | Yes | Server-stored |
No signup required
ClickUp
Yes
Lucidchart
Account needed
dbdiagram.io
Yes
SmartDraw
Account needed
Visual drag-and-drop
ClickUp
Yes
Lucidchart
Yes
dbdiagram.io
Code only
SmartDraw
Yes
Mobile-optimized
ClickUp
Touch-enabled
Lucidchart
Desktop-first
dbdiagram.io
Desktop-first
SmartDraw
Desktop-first
Export to PNG/SVG
ClickUp
Free
Lucidchart
Paid only
dbdiagram.io
Yes
SmartDraw
Trial only
Crow's foot notation
ClickUp
Built-in
Lucidchart
Yes
dbdiagram.io
Yes
SmartDraw
Yes
Pre-built templates
ClickUp
4 templates
Lucidchart
Library
dbdiagram.io
No
SmartDraw
Yes
Client-side privacy
ClickUp
100%
Lucidchart
Server-stored
dbdiagram.io
Yes
SmartDraw
Server-stored
The More You Know
Frequently Asked Questions
Everything you need to know about creating entity-relationship diagrams
SOC 2
CERTIFIED
ISO 27001
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GDPR
COMPLIANT
HIPAA
COMPLIANT