SQL to ER Diagram

SQL to ER Diagram
SQL schema

Paste SQL, see the schema.

Use CREATE TABLE statements to generate an editable entity relationship diagram.

Your schema stays in this browser.

What is SQL to ER Diagram?

SQL to ER Diagram turns database DDL into a visual entity relationship diagram. It extracts tables, columns, primary keys, foreign keys, and relationships from common SQL schema scripts.

How the SQL diagram tool works

Paste SQL schema text, choose a dialect, and the browser parses the statements into a draggable canvas diagram. Layout, zoom, notes, and exported files stay on your device.

Common Use Cases
  • Visualizing a database schema before a migration review
  • Checking foreign key relationships in generated SQL
  • Preparing ER diagrams for README files and architecture notes
  • Annotating schema groups during design discussions
  • Exporting a schema diagram as PNG or SVG
Frequently Asked Questions

Which SQL statements are supported?

The tool focuses on CREATE TABLE and ALTER TABLE foreign key statements for PostgreSQL, MySQL, SQLite, and SQL Server style schemas.

Can I export the diagram?

Yes. Use PNG or SVG export for images, or Save to download a project file that includes SQL, layout, camera position, notes, and groups.