SQL Formatter

Paste messy SQL on the left — get clean, formatted SQL on the right. Formatting happens as you type.

🔒100% Client-Side. Everything runs in your browser — no data is sent to any server.

SQL input

Formatted output

Formatted SQL will appear here

Format SQL in Python with sqlparse

import sqlparse sql = "select id, name from users where active=1 order by name" formatted = sqlparse.format( sql, reindent=True, keyword_case='upper', identifier_case='lower', indent_width=2, ) print(formatted)

Common SQL style conventions

Consistent SQL formatting is essential in team settings where queries end up in version control, code review, and documentation. The most widely adopted conventions are: uppercase all SQL keywords (SELECT, FROM, WHERE, JOIN) so they stand out from identifiers; use snake_case for table and column names (user_id, created_at); place each major clause on its own line to make the logical structure obvious at a glance; and apply 2- or 4-space indentation for column lists and WHERE conditions. Many teams enforce these rules automatically with tools like sqlfluff (Python) or sql-formatter (JavaScript/Node.js) in their CI pipelines.