SQL Formatter & Query Beautifier
Beautify messy SQL queries into standard readable syntax for PostgreSQL, MySQL, SQLite, and SQL Server.
- Runs in your browser
- Free, no signup
SQL formatting runs 100% in your browser — your queries, schema names, and database records are never sent over the network.
Complex SQL queries with multiple JOINs, subqueries, and nested WHERE clauses can quickly become illegible when pasted into chat, documentation, or code reviews. ToolDuck SQL Formatter breaks statements into standard, readable clauses.
Compatible with PostgreSQL, MySQL, MariaDB, SQLite, Oracle, and Microsoft SQL Server, it formats clauses on new lines and offers uppercase, lowercase, or preserved keyword casing.
How to use this tool
- Paste your SQL query into the editor or click "Load Sample".
- Configure options: choose indentation and keyword casing (UPPERCASE or lowercase).
- Click "Format / Beautify" to structure clauses, or "Minify" to flatten into a single line.
- Copy the formatted query or download as a .sql file.
Universal SQL Dialect Formatting
The formatter handles common SQL syntax across PostgreSQL, MySQL, SQLite, Oracle, Snowflake, and BigQuery.
Strings ('...', "..."), inline comments (--), and block comments (/* */) are preserved without altering query semantics.
Frequently asked questions
Is my SQL query executed on any database?
No. ToolDuck does not connect to any database or execute queries. It performs pure text formatting in your browser.
Can I convert keywords to UPPERCASE automatically?
Yes. Choose UPPERCASE from the Keyword Casing dropdown to standardize SELECT, FROM, WHERE, JOIN, and GROUP BY statements.