Does it run or validate my SQL?

No — it only reformats the text for readability. It never connects to a database, executes anything, or checks whether the query is syntactically valid for a specific SQL dialect; it's purely a formatting transformation.

Will formatting change what my query actually does?

No — formatting only affects whitespace, line breaks, and keyword casing, none of which change SQL's meaning. The query's logic, table names, column names, and conditions are left completely untouched.

Does it work with any SQL dialect?

It formats standard SQL syntax shared across common dialects like MySQL, PostgreSQL, SQL Server, and SQLite. Dialect-specific syntax extensions may not be recognized identically, but core clauses (SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, and similar) format consistently across all of them.

Is it safe to paste a query containing real production data or table names?

Yes for the formatting itself — it's a pure text transformation running in your browser, not a database connection. That said, treat any tool the same way you'd treat pasting sensitive data into any web page: avoid pasting credentials or genuinely confidential data unnecessarily, even when the tool itself doesn't transmit anything.

Why does formatting matter if the query works either way?

A working query and a readable query aren't the same thing — a long single-line query with multiple joins and nested conditions is much harder to review, debug, or hand off to a teammate than the same logic broken into clear, indented clauses, even though both execute identically.

SQL Formatter

Format and indent SQL queries.

TL;DR: SQL Formatter is a free, browser-based tool that lets you format and indent SQL queries.

Paste SQL

Output

Understanding the SQL Formatter

SQL Formatter formats and indents complex SQL queries (PostgreSQL, MySQL, SQLite, Oracle, SQL Server, BigQuery), capitalizing standard SQL keywords (`SELECT`, `FROM`, `JOIN`, `WHERE`) for maximum query readability.

How It Works

Paste your raw SQL query.
Select SQL dialect (Standard SQL, PostgreSQL, MySQL, T-SQL, BigQuery).
Choose keyword casing: UPPERCASE, lowercase, or preserve.
Click 'Format SQL' and copy the structured query.

How to Get the Best Results

Capitalize SQL Keywords: Standardizing keywords (`SELECT`, `INNER JOIN`, `GROUP BY`) makes query logic instantly scannable.
Indent Subqueries: Cleanly indents complex nested subqueries and CTEs (`WITH` clauses).
Query Optimization Prep: Formatted queries make it easy to spot redundant joins and missing index conditions.

Related Guides & Tutorials

Json Formatting For Developers — Learn in-depth concepts, best practices, and expert tips.
Base64 Encoding Explained — Learn in-depth concepts, best practices, and expert tips.

100% Client-Side Privacy Guarantee

All processing runs locally inside your browser using JavaScript and HTML5 APIs. Your data, files, and inputs are never uploaded to any remote server. Complete privacy by design.

Frequently Asked Questions

: No — it only reformats the text for readability. It never connects to a database, executes anything, or checks whether the query is syntactically valid for a specific SQL dialect; it's purely a formatting transformation.
: No — formatting only affects whitespace, line breaks, and keyword casing, none of which change SQL's meaning. The query's logic, table names, column names, and conditions are left completely untouched.
: It formats standard SQL syntax shared across common dialects like MySQL, PostgreSQL, SQL Server, and SQLite. Dialect-specific syntax extensions may not be recognized identically, but core clauses (SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, and similar) format consistently across all of them.
: Yes for the formatting itself — it's a pure text transformation running in your browser, not a database connection. That said, treat any tool the same way you'd treat pasting sensitive data into any web page: avoid pasting credentials or genuinely confidential data unnecessarily, even when the tool itself doesn't transmit anything.
: A working query and a readable query aren't the same thing — a long single-line query with multiple joins and nested conditions is much harder to review, debug, or hand off to a teammate than the same logic broken into clear, indented clauses, even though both execute identically.

Cite This Tool

Referencing this tool in a paper, article, or bibliography? Copy a ready-made citation below.

NexLove.org. (2026). SQL Formatter [Software]. https://nexlove.org/tools/sql-formatter.html

“SQL Formatter.” NexLove.org, 2026, nexlove.org/tools/sql-formatter.html.

NexLove.org (2026) SQL Formatter. Available at: https://nexlove.org/tools/sql-formatter.html (Accessed: 2026).

@misc{nexlove_sql_formatter,
  title = {SQL Formatter},
  author = {{NexLove.org}},
  year = {2026},
  url = {https://nexlove.org/tools/sql-formatter.html}
}

Embed This Tool

Add the live SQL Formatter tool to your own website with this snippet — it loads the real, working tool in an iframe, not a static screenshot.

<iframe src="https://nexlove.org/embed/sql-formatter.html" width="100%" height="600" style="border:1px solid #e2e8f0;border-radius:12px" title="SQL Formatter — NexLove.org" loading="lazy"></iframe>

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