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100% Client-Side Processing

SQL Formatter

Last updated: March 9, 2026

Format and beautify SQL queries instantly. Supports MySQL, PostgreSQL, SQL Server, Oracle, and more. Our free online tool processes everything locally in your browser.

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Tool History is a Supporter feature.

Tool Notes is a Supporter feature.

Features

  • ▶Format with customizable indentation (2 or 4 spaces)
  • ▶Support for MySQL, PostgreSQL, SQL Server, Oracle, SQLite
  • ▶Minify SQL (single line)
  • ▶Automatic keyword uppercasing
  • ▶Copy formatted output to clipboard
  • ▶Download as .sql file
  • ▶Keyboard shortcuts for power users
  • ▶Works offline after page loads
  • ▶100% client-side processing - your data never leaves your browser

How to Use This Tool

1

Paste Your SQL

Copy your SQL query and paste it into the input field. The tool accepts any SQL including SELECT, INSERT, UPDATE, DELETE, CREATE, ALTER, and more.

2

Choose Your Settings

Select your SQL dialect (MySQL, PostgreSQL, etc.), indentation level (2 or 4 spaces), and whether to uppercase keywords.

3

Format or Minify

Click 'Format' to beautify your SQL with proper indentation, or click 'Minify' to compress it into a single line.

4

Copy or Download

Once formatted, use the 'Copy' button to copy the result to your clipboard, or click 'Download' to save it as a .sql file.

Methodology

Our SQL formatter uses the sql-formatter library to parse and format SQL queries. All processing happens locally in your browser, ensuring complete privacy and enabling offline functionality.

Parsing Algorithm

The tool tokenizes your SQL query into its component parts: keywords, identifiers, operators, literals, and comments. It then reconstructs the query with proper indentation based on the query structure.

Dialect Support

Different SQL dialects have unique keywords and syntax. By selecting the correct dialect, the formatter can properly recognize database-specific keywords and format them correctly.

Formatting Rules

The formatter applies consistent rules: keywords on new lines, proper indentation for subqueries and joins, aligned column lists, and standardized spacing around operators.

Limitations

Very complex queries with non-standard syntax may not format perfectly. Some database-specific features may not be fully supported. The formatter focuses on readability, not execution optimization.

Frequently Asked Questions

Yes, our SQL formatter is completely free with no registration required. You can format unlimited SQL queries directly in your browser without any costs or subscriptions.

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