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Sql Formatter

SQL Formatter Online — Free Tool

Beautify and format SQL queries instantly in your browser. Supports 21 SQL dialects, customizable keyword casing, and full multi-tab workspace with session persistence.

Why Format SQL?

  • Readability: Well-formatted SQL is easier to understand and review
  • Debugging: Spot logical errors and missing clauses faster
  • Code Review: Clean formatting makes team reviews more productive
  • Documentation: Formatted queries are easier to include in documentation
  • Consistency: Enforce a uniform SQL style across your team

Features

  • 21 SQL Dialects: Standard SQL, MySQL, PostgreSQL, MariaDB, SQLite, TSQL, Transact-SQL, DB2, DB2 iSeries, PL/SQL, BigQuery, Redshift, Spark, Hive, Trino, Snowflake, SingleStoreDB, N1QL, ClickHouse, DuckDB, TiDB
  • Keyword Capitalization: Choose between UPPERCASE and lowercase keywords
  • Indentation: Customizable 2-space or 4-space indentation
  • Indent Styles: Standard, Tabular Left, or Tabular Right alignment
  • Multi-Tab Editing: Work with multiple SQL files simultaneously
  • Workspace Persistence: Sessions survive browser refreshes
  • File Operations: Upload .sql files, download formatted output
  • Real-Time Validation: Instantly validate SQL syntax
  • Auto-Correct: Automatically fix common formatting issues
  • Minification: Compact SQL for storage or transmission
  • Privacy-First: 100% browser-based, zero server uploads

How to Use

  1. Select a dialect from the command panel (e.g., MySQL, PostgreSQL)
  2. Paste or type your SQL query in the input editor
  3. Choose formatting options: indent size, keyword case, indent style
  4. Click Format to beautify your SQL
  5. Review the formatted output and copy or download it
  6. Use tabs to work with multiple files simultaneously

Privacy & Security

All SQL processing happens entirely in your browser using the sql-formatter library. Your queries never leave your computer, making this tool completely private and secure for sensitive database code.

Tips

  • Use Validate to check SQL syntax before execution
  • Switch dialects when working with different database systems
  • Use Auto Correct to fix minor formatting inconsistencies
  • Use Ctrl+B to toggle the sidebar for more workspace space
  • Use Ctrl+E to quickly copy formatted output to clipboard
  • Create folders in the sidebar to organize related queries