SQL Beautifier

Paste messy SQL and get clean, properly formatted queries with proper indentation and keyword casing.

Input: 1 line, 157 chars
Formatting...

Pro Tips

  • Leading commas make it easy to comment out columns -- just add -- at the start of a line without breaking the query.
  • Uppercase keywords is the most common SQL convention. It visually separates SQL syntax from your table and column names.
  • Real-time formatting happens as you type with a short debounce. Click Format SQL to force an immediate reformat.
  • Download as .sql to save your formatted query directly. Use Copy JSON to get both original and formatted versions for documentation.
  • Semicolons setting automatically adds semicolons at the end of your statements, which is required by most SQL databases.

Frequently Asked Questions

Is my SQL data safe?

Absolutely. All formatting happens entirely in your browser using JavaScript. No SQL is sent to any server, stored, or logged. Your queries never leave your device.

What SQL dialects does this support?

The formatter handles standard ANSI SQL and works well with MySQL, PostgreSQL, SQLite, and SQL Server syntax. It correctly handles backtick-quoted identifiers, bracket-quoted identifiers, and dialect-specific keywords.

Can it handle subqueries and CTEs?

Yes. The formatter properly indents nested subqueries within parentheses and handles Common Table Expressions (WITH clauses). Nested queries are indented one level deeper than their parent.

What about comments?

Both single-line comments (-- comment) and multi-line comments (/* comment */) are preserved in your formatted output. They won't break the formatting of surrounding SQL.

Why format SQL at all?

Formatted SQL is dramatically easier to read, debug, and maintain. When queries are on a single line, it's nearly impossible to spot errors. Proper formatting with indentation makes the query structure immediately visible.

Does it handle large queries?

Yes. The tokenizer-based formatter processes even very large queries efficiently. For queries with thousands of lines, there may be a brief delay, but formatting remains accurate.

The Best Free Online SQL Formatter

Writing SQL is one thing. Reading it is another. Whether you are debugging a slow query from your ORM, reviewing a colleague's migration script, or trying to understand a stored procedure written years ago, properly formatted SQL makes all the difference. This SQL formatter takes any messy, single-line, or inconsistently formatted SQL and transforms it into clean, readable, beautifully indented code.

Unlike simple regex-based formatters, this tool uses a proper tokenizer that understands SQL syntax. It correctly identifies keywords, strings, numbers, comments, operators, and identifiers before applying formatting rules. This means it handles edge cases that trip up simpler tools: quoted strings containing keywords, multi-line comments, nested subqueries, and compound keywords like LEFT OUTER JOIN or ORDER BY.

Every setting is configurable. Prefer 4-space indentation? Lowercase keywords? Leading commas for easy column commenting? The formatter adapts to your team's style guide. Changes apply in real-time as you type, so you can see the effect of each setting immediately.

The formatter handles all common SQL statements: SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, and more. It properly formats CASE WHEN expressions with correct indentation, handles JOIN clauses at the right indent level, and places AND/OR conditions on separate lines for readability.

Everything runs in your browser. No data is transmitted to any server. Your SQL queries, which may contain sensitive table names, column names, or data values, never leave your machine. There is no signup, no rate limit, no ads, and no tracking. Just paste your SQL and get beautifully formatted output.

Export your formatted SQL as a .sql file, copy it to clipboard, or grab both the original and formatted versions as JSON for documentation. The tool is designed for developers who need fast, reliable SQL formatting without any friction.

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Last updated: March 2026

What Is an SQL Beautifier?

An SQL Beautifier takes messy, compressed, or poorly formatted SQL queries and transforms them into clean, readable code with proper indentation, consistent keyword casing, and logical line breaks. Essential for code reviews, documentation, and debugging complex queries.

Frequently Asked Questions

What SQL dialects does this support?

The formatter works with standard SQL syntax used by PostgreSQL, MySQL, SQL Server, SQLite, Oracle, and most other databases. It handles common keywords, clauses, and syntax across all major SQL dialects.

Does it handle subqueries?

Yes. Subqueries are properly indented and nested, making complex queries with multiple levels of nesting easy to read.

Can I configure the formatting style?

Yes. Customize indent size (2/4 spaces or tabs), keyword case (UPPERCASE/lowercase), max line width, trailing commas, and more.

Does it preserve comments?

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

Can I download the formatted SQL?

Yes. Download as a .sql file or copy to clipboard with one click.

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