SQL Formatter Online — Free Tool
Beautify and standardize your raw SQL queries with customizable dialects and structural indentation.
Dialect
Indent
Privacy note: All processing happens entirely in your browser. No data is sent to our servers.
About this tool
Readable SQL speeds up code review and incident response. This formatter indents SELECT, JOIN, WHERE, and subqueries with consistent style for major SQL dialects.
Paste minified one-liners from logs or ORMs and get a structured layout you can diff and edit.
Common use cases
- Beautifying SQL pulled from slow-query logs
- Preparing queries for documentation
- Teaching SQL structure in tutorials
- Normalizing style before team review
How to use
- Paste raw SQL into the editor.
- Select dialect if options exist (MySQL, PostgreSQL, etc.).
- Format and review indented output.
- Copy into your IDE, ticket, or wiki.
This page is available at /tools/sql-formatter/.
Understanding the result
- Dialect choice affects keywords, quoting, and function casing rules.
- Formatter may not execute SQL—it only changes whitespace and line breaks.
- Invalid SQL may still format with broken structure—validate separately.
- Very large scripts format slower; split batches if the tab hangs.
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FAQ
Which SQL dialects are supported?
Common formatters cover ANSI-ish SQL plus MySQL, PostgreSQL, SQL Server, Oracle subsets.
Does it change query meaning?
Only whitespace. Semantics stay the same unless comments are stripped.
Can I minify SQL?
Some tools offer compress mode for embedding in strings.
Is SQL sent to a server?
Prefer local formatters for production queries with sensitive table names.