ERD generator

ERD diagram generator for fast schema design

Create entity relationship diagrams from scratch or import existing SQL scripts. Use this free ERD generator to understand data structures, review schema changes, and plan delivery.

Open free ERD app now

From zero

Create tables, choose data types, and connect relations for greenfield database design.

From SQL scripts

Paste DDL and let the app parse schemas for MySQL, PostgreSQL, SQL Server, and Oracle.

Team-ready outputs

Share JSON models and align architecture decisions across engineering and analytics teams.