SQL Formatter: Free Online SQL Formatter — How-To Guide

Try it free: SQL Formatter

What SQL Formatter Does

SQL Formatter takes a messy, single-line SQL query and turns it into clean, indented, readable SQL. It uses a real SQL parser, so nested SELECT statements, JOINs, WHERE clauses, and ORDER BY blocks are laid out in a way that is easy to review before you share a query with a teammate or paste it into documentation.

It also includes dialect presets for common SQL, PostgreSQL, MySQL, SQLite, and BigQuery-style syntax, plus an option to remove comments from your query. There is no sign-up, and everything runs in your browser — your SQL is never uploaded to a server.

How to Use SQL Formatter, Step by Step

1. Open the tool. Go to the SQL Formatter page and you will see an input area ready for your query.
2. Paste your SQL. Copy a query from your editor, a log file, or a database client and paste it into the input box. If you just want to try it out first, load the built-in sample query instead.
3. Pick a dialect preset. Choose the preset that matches your database — for example PostgreSQL, MySQL, SQLite, or BigQuery — so the formatting follows that dialect's conventions.
4. Set your options. Turn on "Remove comments" if you want comments stripped from the output, and check the input size shown next to the editor.
5. Format the query. Run the format action. The formatted query appears in the output area, with indentation that makes the structure of nested queries and joins obvious at a glance.
6. Review the result. Read through the formatted output and check for any syntax errors or warnings the tool flags before you use the query further.
7. Copy or download. Copy the formatted SQL to your clipboard, or download it as a file, and paste it wherever you need it — your editor, a pull request, or a report.

3 Practical Tips

• Format before sharing. A formatted query is much easier for a reviewer to scan than a one-line wall of text. Run your query through the formatter before posting it in a chat thread, ticket, or code review.
• Match the dialect. If your query uses dialect-specific syntax, pick the matching preset first. Formatting with the wrong dialect can produce indentation that looks right but hides a syntax problem.
• Strip comments for clean copies. When you need a clean version of a query for documentation or a bug report, enable "Remove comments" so internal notes and TODOs do not travel with the query.

Frequently Asked Questions

Q: Which SQL dialects are supported?
A: The formatter includes stable presets for common SQL, PostgreSQL, MySQL, SQLite, and BigQuery-style syntax. Pick the preset that matches the database your query runs against.

Q: Is my SQL code uploaded anywhere?
A: No. Formatting happens entirely in your browser. Your input is not uploaded to ToolsFam servers, which makes it safe to use with queries that contain table names or business logic you would rather not share.

Q: Can I format a query that has errors?
A: Yes — paste it in and format it, then check the errors or warnings the tool reports. Review those messages before pasting the result into production code, since a formatting pass does not fix broken SQL.

Q: Do I need an account to use it?
A: No. The tool is free and works without signing in. Paste, format, copy or download, and you are done.

Privacy Note

SQL Formatter runs 100% in your browser — your files and queries never leave your device. Nothing you paste is sent to a server, stored, or logged by the tool.

Try it free: SQL Formatter