Free · runs in your browser · no sign-up

Free SQL formatter — format & beautify online

Paste messy or minified SQL and get clean, readable output. Then let AI explain, optimize, or convert it.

messy input

select id,name,email from users where active=1 and country='US' order by created_at desc limit 20

PostgreSQL

SELECT
  id,
  name,
  email
FROM users
WHERE active = 1
  AND country = 'US'
ORDER BY created_at DESC
LIMIT 20;

Format query Explain with AI

Built for the SQL you actually deal with

The queries that land in your lap are rarely tidy. Here’s where a fast formatter pays off.

SQL slammed into one line

Queries from logs or ORMs arrive as one endless line — impossible to read or review by eye.

Unreadable foreign query

You inherited a query someone else (or an ORM) wrote and can't tell what it does at a glance.

Query is slow, but why?

It runs, just slowly — and it's unclear where the cost is or how to rewrite it.

Wrong dialect

A query written for MySQL won't run on Postgres — porting it by hand is tedious and error-prone.

Everything the free formatter does

8 SQL dialects

PostgreSQL, MySQL, T-SQL, SQLite, BigQuery, Oracle, Snowflake and Redshift — each formatted to its own grammar.

Your rules

Control keyword casing, indent width and line length. Reformats live as you type.

100% in your browser

Formatting runs entirely client-side. Your SQL is never uploaded. No account, no friction.

AI premium

Beyond formatting — understand & improve your SQL

Formatting is just the start. AI features explain, optimize and convert your queries — on top of the same free tool.

Explain query

Get a plain-English breakdown of what any query does — joins, filters, aggregations — in one click.

Optimize

Spot missing indexes and get rewrite suggestions to make slow queries fast.

Convert dialects

Translate a query from MySQL to Postgres, T-SQL to BigQuery, and back — no manual porting.

See pricing

Supported SQL dialects

Each dialect is formatted according to its own keywords and syntax rules.

PostgreSQL MySQL / MariaDB T-SQL (SQL Server)SQLite BigQuery Oracle Snowflake Redshift

Beyond formatting — convert between dialects, explain, optimize, minify and validate.

Convert dialects Explain a query Optimize a query SQL minifier SQL validator

How to format SQL

Paste your SQL

Drop messy, one-line or ORM-generated SQL into the input box.

Pick dialect & options

Choose your database and tune keyword case, indent and line width.

Copy the clean query

Grab the formatted, syntax-highlighted result and get back to work.

Frequently asked questions

Is the SQL formatter free?

Yes. Formatting is completely free, with no sign-up and no usage limits. AI features (explain, optimize, convert) are a separate paid tier.

Is my SQL uploaded anywhere?

No. Formatting runs entirely in your browser using the sql-formatter engine. Your query never leaves your machine.

Which SQL dialects are supported?

PostgreSQL, MySQL / MariaDB, T-SQL (SQL Server), SQLite, BigQuery, Oracle (PL/SQL), Snowflake and Redshift — each formatted to its own syntax rules.

Do I need to create an account?

No. The formatter works instantly with no registration. An account is only needed for AI features.

Can it explain or optimize my query?

Yes — AI-powered explanation, optimization and dialect conversion run on top of the free formatter, with 3 free credits to try.