Is my SQL data sent to any server?

No, never. This tool runs entirely in your browser. All SQL parsing and formatting happens client-side. You can disconnect your internet to verify — the tool works perfectly offline. No server ever sees your SQL queries.

Which SQL dialects are supported?

The formatter supports standard SQL syntax plus common extensions from MySQL, PostgreSQL, and SQLite. It correctly handles SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, WITH (CTEs), JOINs, subqueries, and most common SQL constructs.

Why aren't all keywords converted to uppercase?

By default, only SQL clause keywords (SELECT, FROM, WHERE, etc.) are uppercased. Function names like COUNT or SUM are left as-is to preserve semantic intent. You can use the options panel to customize keyword and function casing to your preference.

How large an SQL query can I format?

There is no hard limit. The tool can format 100K characters of SQL in under a second. For extremely large scripts like multi-hundred-KB stored procedures, we recommend processing them in sections.

Will formatting change my SQL's behavior?

No. The formatter only adjusts whitespace — spaces, line breaks, and indentation. It never modifies SQL keywords, identifiers, or literal values. The formatted SQL is semantically identical to the original. If your original SQL has syntax errors, formatting won't fix them — use a SQL validator for that.

🗄️ SQL Formatter

Instantly beautify messy SQL into clean, readable code with proper indentation

🔒 Client-Side · Privacy First

📥 Input SQL

Indent: Keywords: Functions:

🔒 Everything runs locally: ️ SQL Formatter and other values are processed on your device, never sent to a server. Your SQL is never uploaded anywhere.

📤 Formatted Output

Waiting for SQL input...

What is SQL Formatter - Beautify SQL Online Free?

SQL Formatter - Beautify SQL Online Free is a free online tool that runs entirely in your browser. No download or signup needed — enter ️ SQL Formatter and other values to get results instantly. All data is processed locally.

Use Cases

Process data formats quickly during development and debugging
Verify encoding/decoding results when troubleshooting API issues
Understand data transformation principles while learning programming
Switch between devices without installing local tools

Key Features

Completely Free: No registration, no limits
Privacy Safe: Data never leaves your browser
Cross-Platform: Any modern browser
Zero Dependencies: Open and use