Free Online SQL Formatter & Beautifier

What does an SQL formatter do?

An SQL formatter adds consistent whitespace, indentation, and line breaks around clauses and expressions. It improves readability but does not execute the query or prove it is semantically correct.

Why the selected dialect matters

Database engines differ in keywords, quoting, functions, procedural syntax, and extensions. Selecting the closest dialect helps the formatter interpret the query without treating vendor-specific syntax as generic SQL.

Practical SQL style guidance

• Use one consistent keyword case across a codebase.
• Place major clauses on separate lines.
• Indent nested expressions and subqueries predictably.
• Use aliases that communicate meaning instead of saving one character.
• Review formatter output before committing vendor-specific procedural SQL.

Privacy

SQL often contains table names, business logic, or example values. Formatting and downloads happen locally, and analytics record only a tool action name and non-sensitive settings.

How to use SQL Formatter & Beautifier

1. Paste SQL or upload a .sql file.
2. Select the closest target database dialect.
3. Choose keyword case, indentation, and query spacing.
4. Beautify or minify, then review and test the query against the real database.

Input and output example

Example input

select u.id,count(o.id) from users u left join orders o on o.user_id=u.id group by u.id;

Example output

SELECT
  u.id,
  COUNT(o.id)
FROM
  users u
  LEFT JOIN orders o ON o.user_id = u.id
GROUP BY
  u.id;

Troubleshooting

• Choose the correct dialect when vendor-specific syntax formats unexpectedly.
• A formatter cannot know table names, column types, permissions, or runtime parameters.
• Review comments before minifying because the minifier removes them.

Limitations

Formatting is lexical and structural presentation, not execution, schema validation, query-plan analysis, or SQL-injection protection.

Developer tips

• Use explicit aliases and qualified columns in joins.
• Keep formatting rules in version control for team consistency.
• Run EXPLAIN or the platform equivalent before optimizing based on appearance.

Browser compatibility

Current versions of Chrome, Edge, Firefox, and Safari are supported. File, clipboard, Web Crypto, worker, canvas, and download capabilities can vary by browser and security context; the interface reports unavailable operations rather than uploading data as a fallback.

Supported formats

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