SQL Formatter
Format and beautify SQL queries with syntax highlighting.
Input
Drop file here or click to browse
Maximum 5 MB (.sql,.txt)
Output
About the SQL Formatter
Format messy SQL into readable, consistently indented queries. Long queries pasted out of application logs or ORMs arrive as a single unbroken line; formatting them by hand before you can even begin to review a join condition is a waste of time this tool removes.
How to use it
- 1 Paste the SQL query you want to clean up.
- 2 Click Format to apply consistent indentation and keyword casing.
- 3 Review the structure — clauses and joins align on their own lines.
- 4 Copy the formatted query back into your editor or migration file.
What it does
- Consistent clause and join indentation
- Configurable keyword casing
- Handles nested subqueries and CTEs
- Works with MySQL, PostgreSQL, SQLite and SQL Server dialects
Frequently asked questions
Is my query sent to a server?
No. Formatting runs entirely in your browser, so queries containing table names, schema details, or literal values from your production database never leave your machine.
Does formatting change what my query does?
No. Only whitespace and keyword casing change. The parsed meaning of the statement is identical, so you can safely format a query and run the result.
Which SQL dialects are supported?
The formatter handles standard SQL constructs shared by MySQL, PostgreSQL, SQLite, and SQL Server, including CTEs, window functions, and nested subqueries. Highly vendor-specific procedural blocks may format less tidily than plain queries.
Why should I format SQL at all?
Readability is a correctness tool. Most SQL bugs are join conditions and filter predicates in the wrong clause, and both become obvious once the query is indented. Consistent formatting also makes version-control diffs meaningful instead of one giant changed line.