SQL Formatter
Format messy SQL queries into clean, readable code with proper indentation and uppercase keywords. Includes basic syntax highlighting for keywords, strings, numbers, and comments. Supports SELECT, INSERT, UPDATE, DELETE, and other common SQL statements. Copy the formatted result for use in your code or documentation.
About SQL Formatter
- Format — Uppercase keywords, add line breaks and indentation for readability
- Syntax Highlighting — Keywords, strings, numbers, and comments are color-coded
- Subqueries — Nested queries are automatically indented
- All processing happens locally in your browser — nothing is sent to any server
How to Use
- 1
Paste Your SQL
Enter or paste the SQL query you want to format.
- 2
Click Format
Press Format to apply proper indentation, uppercase keywords, and line breaks.
- 3
Copy Formatted SQL
Copy the formatted query with syntax highlighting for documentation or sharing.
Examples by Niche
Format a long JOIN query with multiple conditions into readable, indented blocks
Clean up one-line SQL from logs for easier debugging and review
Format example queries for API docs or database schema documentation
Frequently Asked Questions
What SQL dialects are supported?
The formatter handles standard SQL syntax common to MySQL, PostgreSQL, SQLite, and SQL Server. It focuses on formatting rather than dialect-specific features.
Does it validate my SQL?
No, this tool only formats the appearance of your SQL. It does not check for syntax errors or validate the query logic.
Why are SQL keywords converted to uppercase?
Uppercasing SQL keywords (SELECT, FROM, WHERE, JOIN) is a widely adopted convention that improves readability by visually separating keywords from table names, column names, and values. Most style guides and teams follow this convention for consistency.
Does the formatter handle subqueries and CTEs?
Yes, the formatter recognizes common SQL structures including subqueries, Common Table Expressions (WITH clauses), JOINs, UNION statements, and CASE expressions. Each is indented according to its nesting level for clear visual hierarchy.
Related Tools
JSON Formatter & Validator
Format, beautify, minify, and validate JSON data instantly in your browser.
XML Formatter & Validator
Format, beautify, minify, and validate XML data instantly in your browser.
YAML Formatter & Converter
Format YAML, validate syntax, and convert between YAML and JSON bidirectionally.
CSS Minifier
Compress CSS by removing whitespace and comments with file size reduction stats.
HTML Formatter
Beautify or minify HTML with configurable indentation and proper tag nesting.
Markdown Preview
Write Markdown with a live side-by-side preview supporting GitHub Flavored Markdown.
Related Articles
The Complete Guide to Free Online Code Formatters: JSON, XML, YAML, HTML, SQL, and CSS
Master code formatting with free online tools for JSON, XML, YAML, HTML, SQL, and CSS. Learn how to beautify, validate, and minify code instantly in your browser — no signup, no installs, no data leaving your machine.
Free Online Config Generators for Developers: Docker, Gitignore, Cron, YAML, and More
Generate Docker Compose files, .gitignore templates, cron expressions, YAML configs, and SQL queries with free browser-based config generators. No signups needed.