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ERD Generator

Generate entity relationship diagrams from SQL CREATE TABLE statements or JSON schema definitions. Visualize your database structure with tables, columns, and relationships.

ERD Generator
SQL CREATE TABLE Statements
ER Diagram
More options
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How to use ERD Generator

  1. Paste your SQL CREATE TABLE statements or JSON schema.
  2. Click Generate to create the diagram.
  3. Explore the interactive diagram with tables and relationships.
  4. Export the diagram as an image.

What is ERD Generator?

An ERD (Entity Relationship Diagram) generator creates visual representations of your database schema from SQL statements or JSON definitions. It shows tables as boxes with columns, primary keys, foreign keys, and relationships between tables.

This tool parses your SQL DDL statements and renders an interactive diagram you can explore, zoom, and export. It's perfect for documenting existing databases or designing new schemas.

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FAQ

What input formats are supported?
SQL CREATE TABLE statements (MySQL, PostgreSQL, SQLite) and JSON schema definitions are supported.
Can I edit the diagram?
The generated diagram is interactive — you can rearrange tables and zoom, but direct editing of the schema requires updating the input.

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Author

MW
Marcus Webb"The DevTool Craftsman"

Full-Stack Developer & Tools Architect

Marcus has been writing code since the dial-up era. He has contributed to open-source developer tools, built CI/CD pipelines for startups, and debugged production incidents at 3 AM more times than he would like to admit. His philosophy is that the best developer tool is the one that gets out of your way, and he writes about practical tooling that helps teams ship faster with fewer headaches.

📖 ERD Generator on Wikipedia·Database Tools on Wikipedia·ERD Generator on Britannica

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