Free Converter
SQL Query Formatter & Highlighter
Format, beautify, and syntax-highlight SQL queries instantly in your browser. Free, secure, and no upload required.
Drag & Drop a .sql file here
Or paste your SQL query below
Or
Format, beautify, and syntax-highlight SQL queries instantly in your browser. Free, secure, and no upload required.
Or paste your SQL query below
SQL queries get long and complex quickly — joins across many tables, nested subqueries, large WHERE clauses with many conditions, complex CASE expressions. Compact SQL crammed onto few lines is unreadable; properly indented SQL with consistent capitalization makes the query structure visible at a glance. Formatting is the difference between a query you can debug and one you can't.
This formatter parses SQL and emits indented, properly-cased output. SQL keywords (SELECT, FROM, WHERE, JOIN, GROUP BY) are typically uppercased, table and column names match source, and indentation reflects nesting (subqueries indented inside their parents, CASE branches indented). Multiple dialect support handles MySQL, PostgreSQL, SQL Server, Oracle, and SQLite differences.
Formatting is non-destructive — the formatted query is functionally identical to the input. Only whitespace and case change.
Reading dense unformatted SQL is mentally taxing. Identifying which conditions belong to which JOINs, where subqueries start and end, and how CASE branches relate all become harder when everything is on few lines. Formatted SQL is faster to read and reduces bugs from misreading structure.
Code review benefits especially. Reviewers can quickly grasp what a query does when it's formatted; reading unformatted SQL during review encourages skipping or rubber-stamping. Formatted SQL also produces meaningful diffs when queries change.
Paste query, click format.
SQL parsing requires understanding the dialect because different databases extend the grammar in different ways. The formatter typically uses a tokenizer to identify keywords, identifiers, literals, and punctuation, then produces output with rules for whitespace and indentation between tokens.
Indentation rules: SELECT, FROM, WHERE, GROUP BY, ORDER BY each on their own line. Joined tables on subsequent lines indented under FROM. Conditions in WHERE on separate lines for readability. Subqueries in their own indented blocks.
Case conventions: keywords uppercase (SELECT, FROM, WHERE) is most common. Some teams prefer lowercase. Identifiers (table and column names) preserve source case.