SQL to Mermaid Diagram
Visualize your database structure instantly. Convert SQL CREATE TABLE statements into professional ER diagrams.
Enter SQL on the left to generate diagram
Database Visualization Made Simple
Tired of manual schema mapping? Our SQL to Mermaid generator automates the process of creating Entity Relationship (ER) diagrams, helping developers understand complex database architectures in seconds.
SQL Script Support
Paste your standard SQL CREATE TABLE statements. We support MySQL, PostgreSQL, SQL Server, and SQLite dialects.
Instant Rendering
Our backend parses the schema and generates a Mermaid.js compatible code, which is rendered visually in real-time.
Professional Output
Export your diagrams as high-quality SVGs. Perfect for project documentation, README files, or technical presentations.
Zero Storage Policy
Your database schema is never stored. Processing happens in temporary memory and is purged immediately after use.
Best Practices for Visualizing
Focus on core tables to avoid cluttered diagrams
Ensure column names are descriptive and alphanumeric
Separate multiple CREATE TABLE statements with semicolons
Download SVG for infinite zooming in documentation
Frequently Asked Questions
Q. What is a Mermaid ER Diagram?
Mermaid is a Javascript-based diagramming and charting tool that renders Markdown-inspired text definitions to create and modify diagrams dynamically. Our tool converts SQL to this format.
Q. Which SQL dialects are supported?
We support standard ANSI SQL syntax. Most CREATE TABLE scripts from MySQL, PostgreSQL, SQLite, and Microsoft SQL Server will work seamlessly.
Q. Can this tool visualize table relationships?
The current version focuses on table structures and columns. We are working on an update to automatically detect FOREIGN KEY constraints to visualize relationships.
Q. Is it safe to paste my production schema here?
Absolutely. We follow a strict 'Stateless' policy. Your SQL code is processed in volatile memory and is never logged or stored on our servers. Privacy is guaranteed.
Q. Why did my diagram fail to render?
This usually happens if there is a syntax error in your SQL or if you used unsupported keywords. Ensure your code starts with 'CREATE TABLE' and has proper closing parentheses.