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Free SQL & Database Tools

Professional database tools that help you work faster. Convert, validate, and visualize your SQL schemas. No signup required, completely free.

JSON to SQL Converter

Convert JSON data to SQL INSERT statements instantly. Perfect for importing API data into databases.

  • Supports MySQL, PostgreSQL, SQLite
  • Array & object support
  • CREATE TABLE generation
  • 100% browser-based & private
Try JSON to SQL

SQL Schema Validator

Validate CREATE TABLE statements for syntax errors, best practices, and optimization opportunities.

  • Detects syntax errors
  • Best practice recommendations
  • Database-specific validation
  • Detailed error reports
Try Schema Validator

ERD Generator Light

Generate Entity Relationship Diagrams from SQL CREATE TABLE statements. Visualize your database structure.

  • Visual table representation
  • Primary & foreign key highlighting
  • Multiple table support
  • Database statistics
Try ERD Generator

Need More Power?
Try SQL Data Builder Pro

These free tools are great for quick tasks. For professional database design, ER diagrams, and visual schema editing, try SQL Data Builder Pro at just $2.99/month.

Explore SQL Data Builder Pro