SQL Formatter

Format or minify SQL with dialect-aware pretty-printing.

Dialect

Keywords

Indent

Mode

Upload .sql file

SQL Input

Output

How SQL Formatter works

This tool uses the sql-formatterlibrary — the category-standard engine behind VS Code SQL extensions and database IDEs — to parse and re-emit SQL with proper indentation, line breaks before each major clause, and consistent keyword casing. Choose from 9 dialects (Standard SQL, MySQL, PostgreSQL, T-SQL, SQLite, BigQuery, PL/SQL, MariaDB, Snowflake) for dialect-aware formatting. Keyword case options (UPPER, lower, preserve) let you match your team's style guide. Minify mode strips comments and collapses whitespace into a compact single-line query — useful for embedding in config files or query strings. Upload a .sql file or paste a query, then download the result. Everything runs locally in your browser — your queries never leave your device.

Frequently Asked Questions

Which SQL dialects does this formatter support?

It handles standard SQL keywords (SELECT, INSERT, UPDATE, DELETE, CREATE, JOIN, etc.) and works with MySQL, PostgreSQL, SQLite, and SQL Server syntax. Dialect-specific functions are preserved as-is.

Does formatting change my query's behavior?

No. SQL is whitespace-insensitive — the database engine ignores formatting when parsing a query. Formatted SQL is functionally identical to a single-line version.

Is my SQL safe to paste here?

Yes. The tool runs entirely in your browser; your query is never sent to a server. You can safely format queries containing sensitive table names, column values, or business logic.

Why are SQL keywords uppercased?

Uppercasing keywords (SELECT, WHERE, JOIN) is the most widely-followed SQL convention. It visually separates keywords from identifiers (table/column names), making queries easier to scan at a glance.

Can it format stored procedures and multi-statement SQL?

Yes. Paste multiple statements separated by semicolons and each is formatted independently. Stored procedure bodies with BEGIN...END blocks and subqueries are also supported.

Private & free — this tool runs entirely in your browser.