Developer Tool

Format & Optimize SQL

Transform messy SQL into clean, readable queries with automatic formatting, keyword capitalization, and AI-powered optimization tips.

About About the SQL Query Formatter

About the SQL Query Formatter

The SQL Query Formatter is a free online tool that beautifies and standardizes your SQL queries with intelligent formatting. It supports MySQL, PostgreSQL, SQL Server, and SQLite syntax. Paste any messy SQL query — whether it is a simple SELECT, a complex JOIN with subqueries, or a multi-statement transaction — and get clean, properly indented, readable SQL in seconds. The formatter handles keywords, functions, operators, and string literals with proper case formatting.

Readable SQL is essential for maintainable database code. This formatter automatically converts keywords to uppercase, aligns column lists, breaks long lines at logical points, and uses consistent indentation throughout. It preserves comments and handles complex nested subqueries correctly. The AI-powered optimize feature also provides performance suggestions.

How to Use the SQL Formatter

Paste your SQL — Paste any SQL query into the input field. Supports MySQL, PostgreSQL, SQLite, and SQL Server syntax.
Select the dialect — Choose your database dialect for optimal keyword formatting.
Format or Optimize — Click Format for clean indentation or AI Optimize for performance suggestions.
Copy the result — Copy the formatted query with syntax highlighting to your clipboard.

Who Needs an SQL Formatter

Database developers — Format queries for code reviews, documentation, and team collaboration.
Data analysts — Clean up ad-hoc queries and share well-formatted SQL with colleagues.
Backend developers — Format SQL before embedding it in application code for consistency.
DevOps engineers — Analyze and optimize database migration scripts with AI-powered suggestions.

Frequently Asked Questions

What SQL dialects are supported?

The tool supports MySQL, PostgreSQL, SQLite, and SQL Server syntax with dialect-specific keyword formatting.

Does it preserve comments?

Yes, single-line (--) and multi-line (/* */) comments are preserved and shown in the formatted output.

What does AI Optimize do?

AI Optimize sends your query for analysis and returns formatting plus performance suggestions and optimization tips.

Is the SQL formatter free?

Yes, it is completely free to use with no limits on the number of queries you can format.

SQL Input

0 chars

Formatted Query

No query yet

Paste your SQL above, then click Format for clean output or AI Optimize for suggestions. Our formatter adds proper indentation, operator spacing, and comma formatting.

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