Which SQL dialects are supported?

The formatter handles standard SQL as well as common extensions for PostgreSQL, MySQL, SQLite, and SQL Server.

Does it uppercase keywords automatically?

Yes. SQL keywords like SELECT, FROM, WHERE, JOIN, and GROUP BY are normalised to uppercase for readability.

Yes. All formatting happens in your browser. No query content is sent to any server.

Best Free Online SQL Formatter

Poorly formatted SQL is hard to read, review, and debug, especially in long queries with multiple JOINs, CTEs, or nested subqueries. devtoolkit.sh's SQL Formatter applies consistent indentation, uppercase keywords, and logical line breaks to any SQL query, making it immediately readable regardless of how it arrived. Paste any SQL — minified, inconsistently indented, or copied from a log — and get clean, formatted output in one click. The formatter supports SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, and common database-specific syntax. Nothing is sent to a server: formatting runs entirely in your browser.

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FAQ

Which SQL dialects are supported?: The formatter handles standard SQL as well as common extensions for PostgreSQL, MySQL, SQLite, and SQL Server.
Does it uppercase keywords automatically?: Yes. SQL keywords like SELECT, FROM, WHERE, JOIN, and GROUP BY are normalised to uppercase for readability.
Is my SQL data safe?: Yes. All formatting happens in your browser. No query content is sent to any server.