SQL to ER Diagram — free online ERD generator: convert a SQL schema (CREATE TABLE statements) into an interactive entity-relationship diagram in your browser. Turn SQL into a diagram instantly, no signup. SQL to ER Diagram Paste SQL, see the schema. Drop your CREATE TABLE statements on the left. Drag tables, scroll to zoom, double-click to rename, export when done. 100% local — your schema never leaves your browser. No accounts, no uploads. SQL to ER Diagram is a free, open-source tool that converts a SQL schema into an interactive entity-relationship diagram (ERD) right in your browser. Paste your CREATE TABLE statements and instantly visualize tables, columns, primary keys, foreign keys and relationships. Works with PostgreSQL, MySQL, SQLite and SQL Server. Drag tables, auto-arrange the layout, add notes, and export to PNG or SVG. Nothing is uploaded — your schema stays on your machine. Frequently asked questions How do I create an ER diagram from SQL?…