SQL Formatter
Format SQL queries.
How do you format an SQL query online?
Docuboxer's SQL formatter takes messy or minified SQL and returns it properly indented, with clauses, keywords and subqueries laid out so the logic is readable at a glance — all directly in your browser, with nothing sent to any server. Pick the dialect that matches your database (MySQL, PostgreSQL, SQL Server or standard SQL) for more precise formatting, and the tool handles the hard cases: multiple JOINs, nested subqueries, CTEs (WITH clauses) and stored procedures, each nesting level indented correctly. Crucially, it never touches the logic — only whitespace, line breaks and indentation change, so the query returns exactly the same results. Because real queries routinely contain table names, business logic and sometimes literal customer data, local processing matters: here the SQL stays in your device's memory, and the tool works offline once the page has loaded. Free, no signup.
How to use SQL Formatter
- Paste your messy or minified SQL query into the tool's editor.
- Select the matching SQL dialect: MySQL, PostgreSQL, SQL Server or standard, for more precise formatting.
- The formatter indents clauses, keywords and subqueries automatically. Copy the clean result or download it as a file.
Common use cases
Make ORM-generated queries readable
Queries produced by Hibernate, Sequelize, Prisma or Django ORM are usually unreadable one-liners. Format them to understand their structure, debug logic errors and optimize performance.
Review and share queries across the team
Standardize the formatting of your team's SQL to make code reviews, technical documentation and onboarding of new developers far easier.
Untangle queries from logs and monitoring
Slow-query logs and APM tools capture SQL as flat single lines. Format them to see which JOIN or subquery is actually doing the damage.
Prepare queries for documentation
Turn working-but-ugly SQL into cleanly indented snippets before pasting them into wikis, runbooks and migration docs.
Format production queries privately
Real queries expose schema names, business logic and sometimes literal data. Here they are formatted entirely in your browser — never uploaded.
Frequently asked questions
How do I format an SQL query online?
Paste the query into the editor, pick your dialect, and the formatter returns it properly indented instantly. Copy the result or download it — free, no signup, and processed locally in your browser.
Does the formatter change my query's logic?
No, absolutely not. It only reorganizes whitespace, line breaks and indentation to improve readability. The semantics, order of operations and result of the query remain identical.
Does it handle long queries with nested subqueries?
Yes. The formatter copes with complex queries containing multiple JOINs, nested subqueries, CTEs (WITH clauses) and stored procedures, indenting each nesting level correctly.
Which SQL dialects are supported?
MySQL, PostgreSQL, SQL Server and standard SQL. Choosing the right dialect helps the formatter respect dialect-specific keywords and syntax quirks.
Can I format SQL generated by an ORM?
Yes — that's one of the best use cases. ORMs emit valid but unreadable SQL; formatting it is the fastest way to understand what your ORM is actually asking the database to do.
Is my SQL sent to a server?
No. Formatting runs entirely in your browser's memory — no server, no logs, no retention — and keeps working offline once the page has loaded. Safe even for queries that reference sensitive schemas or data.