← All tools
// Developer / Data

SQL Formatter online

Format and beautify SQL queries - keyword capitalization, proper indentation

SQL Formatter / Beautifier logo
by
CHUNKY
MUNSTER
// SQL input

Using the SQL Code Cleaner

  1. Paste your SQL query - single-line or multi-line - into the input.
  2. Click Format to apply keyword casing and indentation.
  3. Read the formatted output; copy it back into your editor or PR.
  4. Use the Minify direction if you ever need to flatten it again.

SQL Formatter takes messy, minified, or ORM-generated queries and turns them into readable database query code. Whether it is a single 800-character line from a log file or nested JOINs from a legacy project, this SQL prettifier splits the query along major clause boundaries and indents CTEs for better structural visibility.

How the Query Reformatter and Beautifier Works

It's a syntactic reformatter, not a semantic one - identifiers, string literals, and the order of clauses are never modified, so the formatted query is guaranteed to behave identically to the input. Comments (both -- and /* */ styles) are preserved in their original positions.

Frequently Asked Questions

Which SQL dialects are supported?

The formatter targets standard ANSI SQL, which covers the bulk of MySQL, PostgreSQL, SQL Server, Oracle and SQLite syntax. Vendor-specific extensions (PostgreSQL JSON operators, T-SQL TOP, Oracle CONNECT BY) are passed through but not specially indented.

Will it modify my query semantics?

No - only whitespace, line breaks and keyword case are changed. Identifiers, string literals, comments, and the order of clauses are left untouched, so the formatted query produces identical results when executed.

How are comments handled?

Both -- single-line and /* … */ block comments are preserved in their original positions. The formatter inserts line breaks around them when needed but never moves them across statement boundaries.

Why does the output sometimes wrap differently than I want?

Line breaking is keyword-driven, not column-width-driven. Long expressions in a SELECT or WHERE clause stay on one line because breaking them safely requires a full SQL parser, which would be overkill for a formatter.

Explore the full suite of Developer / Data tools and 290+ other free utilities at Chunky Munster with our SQL Formatter.

// deep diveRead the guide →