AI ER Diagram Generator
Convert plain text descriptions and database schema definitions into clean, accurate Entity-Relationship (ER) diagrams.
Keys & Attributes
Clearly designate primary keys (PK), foreign keys (FK), column types, and constraints across all entities.
Exact Cardinality
Render precise Crow's Foot cardinality notations (one-to-one, one-to-many, zero-to-many) automatically.
Fast Schema Documentation
Transform legacy database tables into visual ER diagrams for onboarding new engineering recruits.
Effortless Database Design & Data Modeling
Entity-Relationship (ER) diagrams are the foundational blueprint for relational database design. Whether you are building a new Postgres database or documenting an existing schema in Supabase or MySQL, visual ER models prevent costly data structure flaws.
Diagramr automates the tedious parts of database diagramming. Instead of dragging individual table boxes and connecting foreign keys manually, describe your schema or paste table definitions — AI generates a clean ER model in seconds.
Frequently Asked Questions
Can I generate ER diagrams from SQL schemas or plain text descriptions?+
Yes. You can paste raw SQL table creation statements or simply describe entity relationships in plain English (e.g. 'A User has many Orders, and each Order contains multiple Products').
Does the AI support database cardinality notation?+
Yes. Diagramr's AI accurately outputs Mermaid ER relationship symbols for one-to-one (1:1), one-to-many (1:N), and many-to-many (N:M) relationships.
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