Free online SQL formatter and beautifier tool supporting MySQL, PostgreSQL, Oracle, and 12+ databases. One-click formatting, intelligent subquery recognition, syntax highlighting, and customizable options. The best SQL code beautifier for 2026.
SQLNice is not just a simple SQL formatter, but your SQL code beautification expert
No configuration needed. Paste your SQL code and format it instantly. Supports compact, standard, and expanded presets to meet different coding standards.
Exclusive feature! Automatically identifies and displays nested subqueries in layers. Supports custom subquery naming for better code clarity and maintainability.
100% free to use, no registration required. All formatting operations are performed locally in your browser, ensuring complete data privacy and security.
Fully supports MySQL, PostgreSQL, Oracle, SQL Server, MariaDB, SQLite, and 12+ mainstream databases. Perfect formatting no matter which database you use.
Rich customization options: keyword case, indentation style, comma position, CASE WHEN format, WHERE condition format, and more. Full control over your code style.
Beautiful dark/light theme toggle, syntax highlighting, responsive design for mobile, tablet, and desktop. Keyboard shortcuts supported (Ctrl+Enter to format).
Simple 4 steps to format your SQL code
Paste or type your SQL code into the input box
Choose compact, standard, or expanded style, or customize options
Click the "Format" button or use Ctrl+Enter shortcut
Copy the formatted SQL code to clipboard with one click
Common questions about SQL formatter
SQLNice supports MySQL, PostgreSQL, Oracle, SQL Server, MariaDB, SQLite, DB2, T-SQL and 12+ mainstream databases.
Yes, SQLNice is completely free to use, no registration required, unlimited usage.
No. All formatting is done locally in your browser. We never save or upload your SQL code, ensuring complete privacy.
An exclusive feature of SQLNice that intelligently identifies nested subqueries and displays them in layers for better clarity.
Join thousands of developers to make SQL code clearer and more professional