Online SQL Formatter & Beautifier

Fast, secure, and bidirectional JSON to YAML/CSV converter with instant syntax validation.

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Introduction

Clean up messy, hard-to-read SQL queries into beautifully indented, standardized code. Supports multiple SQL dialects securely and instantly.

What is the SQL Formatter and Why Use It?

Writing and debugging database queries can quickly result in massive, unreadable blocks of text, especially when dealing with nested `JOIN`s, subqueries, and window functions. Our SQL Formatter Online automatically aligns keywords, structures clauses, and standardizes indentation. Whether you are reviewing a colleague's pull request or debugging a complex query dump, this tool makes your SQL readable. Furthermore, it operates 100% locally, ensuring your proprietary database schema and table names remain confidential.

Key Features

  • 100% Client-Side Privacy: SQL queries often contain proprietary table names, columns, or internal logic. Our local processing guarantees your code is never exposed.
  • Multi-Dialect Support: Flawlessly formats Standard SQL, MySQL, PostgreSQL, SQL Server, and MariaDB dialects.
  • Custom Keyword Casing: Automatically convert keywords (SELECT, FROM, WHERE) to UPPERCASE for maximum readability.
  • Advanced Indentation: Smartly aligns subqueries and JOIN clauses logically, making complex logic easy to follow.

How to Use the SQL Formatter (Step-by-Step)

  1. Step 1: Paste your unformatted SQL query into the text area.
  2. Step 2: Select the specific SQL dialect you are using (e.g., PostgreSQL or MySQL).
  3. Step 3: Click "Format" to instantly standardize your code, then copy it to your clipboard.

Frequently Asked Questions

Absolutely not. We know SQL queries contain sensitive business logic and schema details. The formatting executes locally within your browser, ensuring total privacy.

Yes. The tool includes dialect-specific parsing engines that correctly handle unique operators and syntax rules for MySQL, PostgreSQL, and SQL Server.

No, the formatter strictly targets SQL keywords, clauses, and indentation. It will never alter the contents inside your string literals or data values.