Free SQL Formatter & Beautifier

The SQL Formatter is a free online tool that beautifies and standardizes SQL code. Paste in any SQL - a single query, a multi-statement script, a stored procedure, or a complex query with joins, CTEs, and subqueries - and the formatter returns a clean, consistently indented version with predictable line breaks, aligned clauses, and uniform keyword casing.

Beyond aesthetics, formatted SQL is genuinely easier to read, review, and maintain. Consistent structure makes it obvious where joins begin and end, how filters relate to each other, and which columns belong to which subquery. That matters when you're debugging a slow query at 2am, reviewing a colleague's pull request, or returning to your own code six months later.

The formatter supports 14 SQL dialects, including PostgreSQL, MySQL, T-SQL, Snowflake, MariaDB, BigQuery, SQLite, IBM DB2, Apache Hive, Couchbase N1QL, Oracle PL/SQL, Amazon Redshift, SingleStoreDB, and Spark. It's free, requires no signup, and works on queries of any length.

Our SQL formatter currently supports a variety of dialects, including:

• MySQL
• PostgreSQL
• Snowflake
• MariaDB
• GCP BigQuery
• SQLite
• IBM DB2
• Apache Hive
• Couchbase N1QL
• Oracle PL/SQL
• Amazon Redshift
• SingleStoreDB
• Spark

The "Show advanced options" section on the page exposes more options than the FAQ describes. Confirm the list is complete and consider mentioning line length / comma placement / uppercase vs lowercase keywords if those exist.

Yes, your code is processed securely. We do not store any of your data or formatted SQL. Once you leave the page, your code is deleted from our system.

While the formatter enhances readability, it does not optimize query performance. To improve the efficiency of your SQL queries, check Free SQL Optimizer for PostgreSQL and MySQL

The SQL formatter runs entirely in your browser. Your SQL code is never sent to our servers, never logged, and never stored. We don't track, analyze, or collect any data about the queries you format.

Formatted SQL is easier to read, review, and debug. Consistent indentation, keyword casing, and line breaks make complex queries - especially those with multiple joins, CTEs, or subqueries - much easier to follow. Formatting also helps teams maintain a shared style in code reviews and reduces merge conflicts when SQL is stored in version control.

Yes. The formatter handles very long queries, including multi-statement scripts, CTEs, window functions, stored procedures, and nested subqueries. If your query spans hundreds of lines, the formatter will preserve its structure while applying consistent indentation and spacing.

No. The formatter only changes whitespace, line breaks, indentation, and keyword casing - it never modifies query logic, table names, column names, or values. Your formatted query will produce exactly the same results as the original.

The SQL Formatter rewrites your code for readability without checking whether it's valid. The SQL Syntax Checker parses your code and reports syntax errors but doesn't reformat it. For best results, format your code first, then run it through the Syntax Checker.

Yes. Aiven offers official plugins for JetBrains IDEs (IntelliJ IDEA, DataGrip, PyCharm, and others) and a Visual Studio Code extension. Both bring SQL formatting, validation, and optimization directly into your editor.

Yes, the SQL Formatter is completely free and requires no signup or account. Use it as often as you'd like for personal or commercial work.

Alongside the SQL Formatter, Aiven offers a SQL Syntax Checker, SQL Optimizer, SQL Compare, PostgreSQL Playground, and a Text-to-SQL AI Converter. All are free and require no signup.

Browse the full toolkit of free SQL and data tools.