The free online SQL formatter built for engineers
Free SQL Formatter is a fast, privacy-first SQL formatter and beautifier that turns messy, single-line, or machine-generated SQL into clean, readable, consistently indented queries. Whether you need to format SQL online for a quick code review, tidy a query copied out of application logs, or beautify a giant analytical statement, this online SQL formatter does it instantly in your browser — no uploads, no sign-up, and no usage limits.
A SQL formatter & beautifier for every dialect
SQL syntax differs from one database to the next, so a one-size-fits-all tool produces
awkward output. This SQL formatter & beautifier online
supports every major dialect. It works as a
Postgres SQL formatter, a MySQL and MariaDB beautifier,
a SQL Server (T-SQL) and Oracle PL/SQL formatter, and as a
ClickHouse SQL formatter that understands
dialect-specific syntax such as map access (attributes['key'])
and CAST expressions. Pick your dialect, then
control keyword case, identifier case, indentation, operator spacing, and line breaks so
the formatted output matches your team's style guide exactly.
Format SQL online, even when it's incomplete
Most tools fail the moment a query isn't perfectly valid. This
SQL formatter online is different: it formats complete
statements, queries with missing arguments or
? / :name /
$1 placeholders, and even bare fragments such as a
lone WHERE clause. Formatting never depends on a
successful parse, so you always get readable output — and a clear, friendly message instead
of a crash when the input is unusual.
More than beautifying — understand and edit your SQL
Beyond formatting, Free SQL Formatter helps you reshape queries. The visual
WHERE editor renders your conditions as an
interactive AND/OR tree and a node graph; change a value or an operator and the SQL
updates live. Smart parameter binding detects placeholders and groups repeated ones, so
reusing a column like timestamp means you fill the
value once and it applies everywhere it appears. You can beautify or minify, copy or
download the result, and share a link that encodes everything in the URL — perfect for
pasting a clean query into a pull request or a teammate's chat.
Edit WHERE clauses inside CTEs and subqueries
Real-world analytical queries — especially in
ClickHouse, PostgreSQL, BigQuery and Snowflake — are
usually built from a chain of common table expressions. Free SQL Formatter scans the
entire query, finds every WHERE clause in every CTE
(plus subqueries and the outer SELECT), and lists
them in a labelled dropdown. Pick the CTE you want to work on and the visual editor
switches to that clause; tweak a condition and the edit is spliced back into the right
place. Anything the parser can't fully decompose — a
GLOBAL IN (SELECT ...) subquery, a backticked
identifier with dialect-specific syntax — falls back to an editable raw text node, so
you never lose the ability to change it. It's the only online SQL formatter and editor
that handles multi-CTE queries this way.
Private by design, fast by default
Because every byte is processed locally with JavaScript, your queries never touch a server. That makes this online SQL formatter safe for production, proprietary, and sensitive SQL — paste with confidence and close the tab when you're done. There is nothing to install and nothing to configure: open the page, paste your query, and it is formatted in milliseconds.
Why choose this online SQL formatter
Readable SQL is easier to review, debug, and maintain, and a consistent format reduces noise in version control diffs. Compared with a typical online SQL formatter, Free SQL Formatter is faster because it runs entirely client-side, cleaner because it has no intrusive ads, and more capable because it goes beyond indentation. It handles deeply nested sub-queries, common table expressions, window functions, and long boolean conditions with ease, and it keeps unusual or vendor-specific expressions intact rather than discarding them. From a quick one-off cleanup to standardising every query in a large codebase, it gives you a reliable SQL formatter and beautifier you can return to every day.
How to format SQL online
Using the tool takes three steps. Paste your SQL into the editor, choose the database dialect and your preferred formatting options, then copy the beautified result. Whether you searched for a SQL formatter, an online SQL formatter, a SQL formatter & beautifier online, a ClickHouse SQL formatter, or a Postgres SQL formatter, Free SQL Formatter is designed to be the fastest, cleanest way to format SQL online and keep your code consistent.