SQL Formatter

Format and beautify your SQL queries instantly with our free online SQL formatter. Turn messy, single-line queries into clean, readable SQL with proper indentation, syntax highlighting, and configurable keyword casing. You can also minify queries when you need compact output for scripts and configurations.

Features

• Auto-format SQL with proper indentation and line breaks
• Syntax highlighting for keywords, strings, numbers, and comments
• Configurable keyword casing: UPPERCASE, lowercase, or Capitalized
• Minify mode to compress queries into a single line
• Support for common SQL dialects including MySQL, PostgreSQL, SQL Server, and SQLite
• Handles subqueries, CTEs, JOINs, and CASE statements with correct nesting
• Copy formatted or minified output to clipboard
• Paste and format with a single keyboard shortcut

How to Use

1. Paste your SQL query into the input editor.
2. Select your preferred keyword casing style from the options bar.
3. Choose the SQL dialect if you need dialect-specific formatting rules.
4. Click "Format" to apply indentation, line breaks, and keyword styling.
5. To compress a query, click "Minify" to strip all unnecessary whitespace.
6. Copy the result and use it in your database client, documentation, or codebase.

Use Cases

• Code Reviews: Format queries embedded in application code so reviewers can read and evaluate the logic without mentally parsing dense one-liners.
• Documentation: Clean up SQL examples for technical docs, README files, and internal wikis so they are easy to follow.
• Debugging: Reformat a poorly indented query to understand its structure, identify missing JOIN conditions, or spot logic errors.
• Migration Scripts: Standardize the formatting of migration files across a team so diffs are meaningful and version control stays clean.
• Learning SQL: Paste complex queries from tutorials or Stack Overflow and format them to see the clause structure and nesting clearly.

FAQ

Does the formatter change the logic of my query?

No. The formatter only modifies whitespace, line breaks, and keyword casing. It does not alter table names, column names, conditions, or any other part of your query logic. Your formatted query will execute identically to the original.

Which SQL dialects are supported?

The formatter supports standard SQL along with dialect-specific syntax for MySQL, PostgreSQL, Microsoft SQL Server, and SQLite. Select the appropriate dialect from the options to ensure features like backtick quoting, double-dollar strings, or square bracket identifiers are handled correctly.

When would I use the minify option?

Minifying is useful when you need to embed a query in a configuration file, environment variable, or URL parameter where whitespace adds unnecessary bulk. It is also helpful for logging compact query strings in production systems where readability is less important than storage efficiency.