Free Online SQL Formatter & Beautifier
Format messy SQL queries into clean, readable code instantly. This free tool properly indents SELECT, JOIN, WHERE clauses and uppercases SQL keywords — making complex queries easy to read and debug.
Features
- Automatic indentation of SQL clauses
- Uppercase keyword conversion
- SQL minification for production use
- Supports all major SQL dialects
- 100% client-side — your queries never leave your browser
Why Format Your SQL?
Well-formatted SQL is easier to review in pull requests, debug during incidents, and maintain over time. This tool uses the popular sql-formatter library to handle complex nested queries, CTEs, and window functions correctly.
SQL Formatting Best Practices
- One clause per line (SELECT, FROM, WHERE, JOIN)
- Indent join conditions and subqueries
- Uppercase SQL keywords for readability
- Align column lists vertically in large SELECT statements
- SQL Performance Explained — essential reading for query optimization
- Learning SQL (O’Reilly) — essential reading for SQL fundamentals
- Pro SQL Server Internals — essential reading for database performance
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