Free SQL Formatter

Paste any SQL query and get clean, indented output in milliseconds. Supports major keywords, subqueries, CTEs, and dialects including Snowflake, Postgres, BigQuery, and MySQL. Runs fully in your browser - your SQL never leaves the page.

Why format SQL?

Well-formatted SQL is easier to code-review, easier to debug, and easier to compare against version control diffs. A single-line 500-character query with nested subqueries is a code smell waiting for a production incident. Auto-formatting enforces consistency across teams and eliminates entire categories of "but mine looks different" disputes in PRs.

Formatting rules applied

• Major keywords uppercased: SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, HAVING, UNION, WITH
• Sub-keywords uppercased: ON, AS, AND, OR, IN, BETWEEN, LIKE, IS NULL, NOT NULL
• String literals preserved: quoted strings and comments are protected before keyword transforms
• Paren-based indentation: subqueries and window specs indent by 2 spaces per depth level
• One clause per line: each major keyword starts a new line at the correct indent level

Supported dialects

The formatter is dialect-aware for the most common variants - Snowflake QUALIFY clauses, Postgres DISTINCT ON, BigQuery STRUCT/ARRAY literals, and MySQL backtick identifiers all pass through intact. Unusual dialects may need minor manual cleanup.

Is this private?

Yes. The formatter runs entirely in your browser using JavaScript - no network request is made, no SQL is logged, and nothing is stored. You can even use it offline once the page is loaded.

Related reading

See the SQL window functions cheat sheet, Snowflake SQL cheat sheet, and Databricks cheat sheet for syntax references.

← Back to Home