Free Online JSON to SQL Schema Converter & DDL Generator

Transform raw JSON objects into structured, professional-grade SQL CREATE TABLE statements instantly.

JSON INPUT

0 chars

SQL OUTPUT (DDL)

MYSQL 
-- SQL Schema will appear here...

Smart Type Inference

Automatically detects integers, decimals, booleans, and strings to suggest the best storage types.

Relational Handling

Handles nested JSON objects and arrays by creating separate related tables with foreign key mappings.

Universal Compatibility

Switch between MySQL, PostgreSQL, and SQLite instantly with optimized syntax for each engine.