SQL Formatter & Beautifier
Clean up compact SQL from logs, migrations, BI tools and database clients locally in your browser.
Click to choose a .sql file or drop it here
You can also paste SQL directly into the editor.
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Dialect-aware formatting
Use a formatter mode that matches SQL from MySQL, PostgreSQL, SQL Server, SQLite, BigQuery, Snowflake or Redshift.
No database connection
The tool only rewrites pasted text for readability. It does not validate tables, columns, permissions or runtime behavior.
Safe analytics
Usage events include only the selected dialect and broad input size bucket, never SQL text, identifiers, literals or filenames.
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Frequently Asked Questions
Is my SQL uploaded to Convertr?
No. SQL formatting runs in your browser with a bundled open-source formatter. Queries, table names and values are not sent to Convertr servers.
Which SQL dialects are supported?
The formatter supports standard SQL plus common dialects including MySQL, MariaDB, PostgreSQL, SQL Server T-SQL, SQLite, BigQuery, Snowflake and Redshift.
Does this execute SQL or connect to my database?
No. The tool only formats text. It does not execute SQL, connect to databases, inspect schemas or verify object names.
SQL Formatter
Format or compact supported SQL text using the selected dialect and indentation settings.
- Input
- SQL text, dialect, keyword case, and indentation choices.
- Output
- Formatted SQL text ready for review or copying.
- Real limitations
- Formatting does not connect to a database, validate schema names, optimize a query, or guarantee support for every vendor extension.
- Privacy and data handling
- SQL text, dialect, keyword case, and indentation choices is processed in this browser tab. Convertr does not receive or store it; closing or reloading the page clears the working state unless the tool explicitly offers a local download.
How to use this tool
- Provide SQL text, dialect, keyword case, and indentation choices in the tool controls.
- Choose the settings that affect formatted SQL text ready for review or copying, then run the tool.
- Review formatted SQL text ready for review or copying before copying or downloading it.
Common failure modes
Unterminated strings, comments, or unsupported dialect syntax can produce a parse error or imperfect formatting.
Useful example
Format a nested PostgreSQL SELECT with joins and a subquery into readable clauses and indentation.