SQL Formatter & Beautifier — Free Online
Format, beautify, and pretty-print SQL queries instantly. Supports MySQL, PostgreSQL, SQLite, T-SQL, PL/SQL, MariaDB, BigQuery, and standard SQL with customizable indentation and keyword casing.
What is a SQL Formatter?
A SQL formatter is a tool that takes raw, minified, or poorly indented SQL and rewrites it with consistent indentation, line breaks, and keyword casing so the query is easy to read and maintain. SQL queries written in a single line or with inconsistent formatting are common in application code, ORM-generated output, and database logs. A formatter parses the SQL tokens and reconstructs the query following style rules — indenting clauses like SELECT, FROM, WHERE, JOIN, GROUP BY, and ORDER BY on separate lines with proper nesting. This tool supports multiple SQL dialects including MySQL, PostgreSQL, SQLite, T-SQL (SQL Server), PL/SQL (Oracle), MariaDB, and BigQuery, each with their own syntax nuances.
How to Use This Free Online SQL Formatter
- Paste or type your SQL query into the input text area. The tool formats it automatically in real time.
- Select the SQL dialect that matches your database engine (Standard SQL, MySQL, PostgreSQL, SQLite, T-SQL, PL/SQL, MariaDB, or BigQuery) for dialect-aware formatting.
- Choose your preferred indentation style: 2 spaces, 4 spaces, or tab characters.
- Set keyword casing: preserve original casing, convert to UPPERCASE, or convert to lowercase.
- Toggle 'Line between queries' to add blank lines between multiple SQL statements separated by semicolons.
- Click the Copy button to copy the formatted SQL to your clipboard.
Common Use Cases for SQL Formatting
- Debugging complex queries — Format long, single-line SQL queries from application logs or ORM output to quickly understand the query structure, identify missing JOINs, or spot incorrect WHERE conditions.
- Code review and documentation — Ensure all SQL in pull requests and documentation follows a consistent style with proper indentation and keyword casing for readability.
- Migrating between databases — Select the target dialect to format SQL with the correct syntax conventions when migrating queries between MySQL, PostgreSQL, SQL Server, or other engines.
- Learning SQL — Paste example queries and see them properly formatted with each clause on its own line, making it easier to understand SQL structure and learn best practices.
- Standardizing team SQL style — Agree on formatting rules (indentation, keyword case) and use the formatter to normalize all team members' SQL before committing to shared repositories.