SQL Formatter – One Clause Per Line

Copied a query out of a log, an ORM, or someone else’s script and landed a single unreadable line? This free sql formatter lays it out the way you would want to read it: one clause per line, indented subqueries, and consistent keyword casing. Everything runs in your browser, so nothing is uploaded, no account is needed, and no signup stands between you and the result.

How to use this sql formatter

Three quick steps — no signup, no cost.

1Paste your query

One statement or a whole script — semicolon-separated statements are formatted in sequence.

2Pick your database and style

Choose uppercase, lowercase, or as-typed keywords and your indent size.

3Copy the readable query

Paste it back into your database client, your code review, or your migration script — the logic is untouched.

Why a sql formatter makes reviews and debugging faster

Same query, visible structure.

One clause per line

SELECT, FROM, WHERE, GROUP BY, and ORDER BY each start their own line, so you can see at a glance what is selected, joined, and filtered.

Subqueries indented properly

Nested queries step in one level at a time instead of hiding inside a wall of text, which makes join chains and filter logic reviewable.

Dialect-aware parsing

The formatter lays out your SQL clause by clause, so the structure is easy to scan — and because it only changes layout, a syntax error in the input stays a syntax error in the output.

Never executes anything

Formatting only rearranges text in your browser. Nothing connects to a database, so queries containing table names and business logic are safe to paste.

Dialect notes — this formatter does not parse dialects

If the layout looks off on a query you know is valid, check this before you rewrite anything.

Each database has its own syntax quirks — MySQL and MariaDB use backticks around names, SQL Server (T-SQL) uses square brackets and TOP, PostgreSQL has:: casts and the ->> JSON operator, and Oracle (PL/SQL) has ROWNUM. This formatter is dialect-agnostic: it lays out clauses and indentation without parsing vendor syntax, so a dialect choice is recorded for a future version, not applied today.

Keyword casing is convention, not a requirement: SQL treats keywords as case-insensitive, so uppercase is simply the most common house style for making the query’s skeleton stand out from its identifiers. Pick the style your team already uses and stay consistent.

Formatting never fixes a broken query. A query that is wrong before formatting is still wrong after it — the formatter only changes layout, never logic, so a syntax error in the output means a syntax error in the input.

SQL Formatter FAQs

Short, direct answers to the questions readers ask most.

No. Formatting only changes whitespace, line breaks, and optionally keyword casing. Identifiers, strings, and values are untouched, so the query executes identically.

No. It changes only the layout of a query. If the input has a missing parenthesis, a dangling comma, or a typo, the error stays — and this tool does not validate or report errors — it only re-lays the text.

None in particular — this is a dialect-agnostic layout engine, not a dialect parser. It re-lays clauses, keywords, and indentation without validating vendor syntax, and it never rewrites strings or quoted names. A layout that looks off is an engine limitation, not proof your query is invalid.

Yes. Paste a whole script with semicolon-separated statements and each one is formatted in sequence.

Yes. It runs entirely in your browser with no account, no signup, and nothing is executed or uploaded.