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Developer tools
SQL Formatter
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About this tool
About this tool
SQL Formatter beautifies SQL queries by indenting clauses, normalizing keyword case, and aligning expressions through parsing logic that runs in your browser. You can paste queries from various dialects for readable output.
Format SQL statements with readable indentation and keyword casing. Use the full-width workspace to format content while reviewing syntax, encodings, protocol fields, and implementation details. The tool accepts plain text, provides focused options, and creates SQL output that you can inspect, copy, download, or save as a local draft.
Built for daily work
How to use this tool
How to use this tool
Configure the operation
Review Keyword Case and Indent Size. The selected controls determine how the SQL Formatter interprets the source and builds the result.
Run the tool
Start the SQL Formatter and review the result, visual preview, and technical report. Correct any reported issue and run the tool again when necessary.
Export or continue the workflow
Copy or download the SQL result, save a browser-local draft, or open a related tool for the next conversion, validation, or cleanup step.
Key features
Key features
Keyword case and indentation options
Choose uppercase or lowercase keywords and set indent size to two or four spaces. SELECT, FROM, WHERE, and JOIN blocks are aligned consistently.
Statement structure preserved
Subqueries, CTEs, unions, and nested expressions are indented to reflect their nesting level without altering the SQL logic.
Copy and download formatted output
One-click copy or download the reformatted SQL for pasting into a query editor or version control.
No query execution or database connection
The formatter only restructures text. It does not run, explain, or validate the SQL against any database.
Practical use cases
Practical use cases
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
Input formatsplain text
Output formatsSQL
ProcessingLocal browser processing
Task controlsKeyword Case and Indent Size
Maximum local file25 MB per supported file
Workspace featuresFocus mode, examples, copy, download, local drafts, and result reports
Limitations and important notes
Limitations and important notes
- Formatting improves readability but does not guarantee semantic correctness.
- Large or deeply structured input depends on available browser memory and may process more slowly on mobile devices.
- The tool implements practical browser-based processing and may not reproduce every feature of specialist desktop software or every vendor-specific extension.
- Keep the original source and review generated output before production, security-sensitive, financial, legal, or safety-critical use.
Frequently asked questions
Frequently asked questions
It indents and pretty-prints SQL queries by normalizing keyword case and clause layout directly in your browser, using local parsing without uploading content.
The formatter accepts generic SQL and handles common SELECT, INSERT, UPDATE, DELETE, JOIN, and CTE patterns. Review output for vendor-specific extensions.
No. Formatting changes whitespace and line breaks only. It does not rewrite logic, add casts, or change identifiers.
Yes. Files are processed locally with a limit of 25 MB per file, as described in the technical details.
Related guides and solutions
Related guides and solutions
How to format SQL for readability
A guide to readable SQL: consistent casing, clause placement, indentation, and when to use the formatter.
Learn moreFormat SQL online in one paste
One-line SQL is impossible to review. The [SQL formatter](tool:sql-formatter) re-indents queries, aligns keywords, and applies consistent casing, so you can read and review them instantly, all locally.
Learn moreHow to convert CSV data into safe SQL inserts
A practical workflow for turning CSV rows into CREATE TABLE, INSERT, or upsert statements without treating every value as trusted SQL.
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