SQL Formatter
Free online sql formatter. No sign-up, no installation. Runs entirely in your browser.
What is SQL Formatter?
SQL Formatter is a free online tool that beautifies and standardizes your SQL queries. It automatically applies proper indentation, uppercases SQL keywords, and adds strategic line breaks to make your code more readable. Whether you’re debugging complex queries or preparing SQL for code review, this tool helps you write cleaner, more maintainable database code.
How to Use SQL Formatter
Paste your raw SQL query into the input box and click “Format” to instantly beautify it. Customize the formatting behavior with these options:
- Dialect: Choose your database type (MySQL, PostgreSQL, SQLite, MSSQL) for dialect-specific formatting
- Indent Size: Select 2 spaces, 4 spaces, or tabs for indentation
- Keywords Case: Convert SQL keywords to UPPERCASE or lowercase
- Newline Options: Add line breaks before FROM, WHERE, and AND clauses for better readability
- Minify: Remove all unnecessary whitespace to compress your SQL
Use Cases for SQL Formatter
SQL Formatter is ideal for:
- Cleaning up auto-generated or minified SQL queries
- Standardizing SQL code style across your team
- Making legacy or complex SQL more readable
- Preparing queries for code reviews and documentation
- Minifying SQL for performance optimization in production
- Learning SQL by studying well-formatted examples
Frequently Asked Questions
Is my SQL data stored anywhere?
No. All SQL formatting happens entirely in your browser using JavaScript. Your queries are never sent to any server, stored in a database, or logged. Your data remains completely private and secure.
Which SQL dialects are supported?
SQL Formatter supports MySQL, PostgreSQL, SQLite, MSSQL, and generic SQL. Most standard SQL syntax is compatible across these dialects. The dialect selector allows you to apply database-specific formatting when needed.
What’s the difference between Format and Minify?
Format adds proper indentation, line breaks, and keyword capitalization to make SQL readable and maintainable. Minify removes all unnecessary whitespace and line breaks to compress your SQL into a single line, reducing file size for transmission or storage.
Can I customize the formatting rules?
Yes. You can customize indent size (2/4 spaces or tabs), keyword case (uppercase/lowercase), and choose whether to add newlines before FROM, WHERE, and AND clauses. These options let you match your team’s SQL style guide.
Does this tool support comments in SQL?
Yes. Both single-line (–) and multi-line (/* */) comments are preserved and highlighted in gray during formatting. Note that comments are removed when you minify to reduce query size.
Can I download the formatted SQL?
Yes. The “Download SQL” button saves the formatted output as a .sql file that you can open in your database IDE, text editor, or any SQL tool. You can also copy the output directly to your clipboard.