SQL Formatter & Beautifier

Q: Does the validator catch every error?

It catches common mechanical errors such as unbalanced quotes, brackets or parentheses, unclosed comments, missing semicolons between statements, and syntactic anomalies the parser stumbles on. It does not connect to a live database, so it cannot verify that table or column names exist.

Q: Does it handle multi-statement scripts?

Yes. Semicolon-separated statements are formatted as a single script with configurable blank lines between queries.

Q: What size queries can it handle?

Anything up to a few megabytes works smoothly. File uploads are capped at 10MB.

Q: What does Dense operators do?

It removes whitespace around operators like equals, plus and minus, so you get a=b instead of a = b. Useful for compact migrations.

Q: Does it work on mobile?

Yes. Both panes stack vertically and all toolbar controls wrap responsively.

Beautify, minify, validate & convert SQL across 16+ dialects — MySQL, PostgreSQL, SQLite, T-SQL, PL/SQL, BigQuery, Snowflake, Redshift & more. 100% private, runs in your browser.

Input SQL

📁 File

0 chars · 0 lines · 0 queries

Formatted SQL

Result appears here…

—

🔒 100% private — your SQL never leaves your browser.

Recent SQL

How to Use the SQL Formatter

Pick a mode — Format, Minify, Validate or Convert between dialects.
Choose your dialect — MySQL, PostgreSQL, SQLite, T-SQL, PL/SQL, BigQuery, Snowflake and more.
Paste, type or drop a .sql file into the left pane.
Set your style — indent size, keyword case (UPPER / lower / preserve), spacing between queries.
Click "Run" (or enable Auto-run) — the formatted result appears instantly with syntax highlighting and line numbers.
Copy, download or share — export as .sql or copy a self-contained share link.

What is an SQL Formatter?

An SQL formatter (also called a SQL beautifier or pretty-printer) takes messy, single-line or inconsistently-indented SQL and reformats it into clean, readable, professionally-styled queries. Whether you're reviewing an ORM-generated query, debugging a stored procedure or onboarding a junior developer, formatted SQL is dramatically easier to read, diff and reason about.

Our SQL formatter supports 16+ dialects including ANSI SQL, MySQL, PostgreSQL, SQLite, MariaDB, MS SQL Server (T-SQL), Oracle (PL/SQL), Google BigQuery, Snowflake, Amazon Redshift, IBM DB2, Apache Spark, Trino/Presto, Hive, Couchbase N1QL and SingleStoreDB. It runs entirely in your browser — your queries never travel over the network, which makes it safe for sensitive production schemas, NDAs and regulated environments.

Common Use Cases

👨‍💻 Backend DevelopersFormat ORM-generated queries, stored procedures and migrations before code review.

🗃️ Database AdministratorsStandardise team SQL style and clean up legacy scripts spanning thousands of lines.

📊 Data Analysts & BIBeautify analytics queries for Looker, Metabase, Tableau, dbt and notebook documentation.

🎓 Students & LearnersLearn proper SQL formatting conventions with clear keyword highlighting.

🔁 Database MigrationConvert queries from MySQL to PostgreSQL, Oracle to Snowflake, T-SQL to BigQuery and more.

🐛 Query DebuggingSpot syntax errors, missing commas, unbalanced parentheses and JOIN issues faster.

📝 Technical WritersGenerate clean SQL examples for docs, blog posts, Stack Overflow answers and books.

🚀 DevOps & SREFormat and validate migration scripts in CI/CD before they hit production.

🧪 QA EngineersCompare query versions across releases using clean side-by-side formatting.

📦 ETL EngineersBeautify pipeline SQL for Airflow, dbt, Dagster, Fivetran transforms and snowsql scripts.

Why Choose Our SQL Formatter

✅ 100% Private — SQL is parsed entirely in your browser.

⚡ 16+ Dialects — every major flavour covered.

🔁 Dialect Conversion — translate between MySQL, PostgreSQL, Snowflake & more.

📉 Minify Mode — strip comments & collapse whitespace.

✅ Validation — flags unbalanced quotes, brackets, missing semicolons.

🎨 Syntax Highlighting — keywords, strings, numbers, comments coloured live.

🔢 Line Numbers — toggleable on the output pane.

📐 Indent Control — 2 / 4 spaces or Tab.

🔠 Keyword Case — UPPER, lower, or preserve original.

📊 Query Count — see how many statements are in the script.

📂 File Upload — drop .sql or .txt files up to 10MB.

🕘 History — last 10 queries auto-saved locally.

🌙 Dark Mode — persisted, with syntax-aware contrast.

⛶ Fullscreen — distraction-free editing.

🔗 Share Link — encode & share queries via URL.

↕ Swap In/Out — re-format the output as new input.

⌨️ Shortcuts — Ctrl/⌘+Enter Run, Esc exit fullscreen.

📱 Fully Responsive — desktop, tablet, mobile.

💯 Always Free — no signup, no watermark, no limits.

Frequently Asked Questions

Is my SQL uploaded anywhere?

No. Parsing, formatting and validation all happen inside your browser using JavaScript. Your queries — including any sensitive table names, column names or sample data embedded in them — never leave your device.

What dialects are supported?

Standard ANSI SQL plus MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server (T-SQL), Oracle (PL/SQL), Google BigQuery, Snowflake, Amazon Redshift, IBM DB2, Apache Spark, Trino/Presto, Hive, Couchbase N1QL and SingleStoreDB.

Does the validator catch every error?

It catches common, mechanical errors — unbalanced quotes, brackets or parentheses, unclosed comments, missing semicolons between statements, and syntactic anomalies the parser stumbles on. It does not connect to a live database, so it can't verify table or column names exist.

Can I convert MySQL to PostgreSQL automatically?

The Convert Dialect mode re-tokenises and re-formats your query into the target dialect's idioms (keyword spelling, identifier quoting). Genuinely incompatible features — e.g. PostgreSQL ::cast vs MySQL CAST(), vendor-specific functions like GROUP_CONCAT vs STRING_AGG — still need a manual sweep, so always test converted queries.

Does it handle multi-statement scripts?

Yes — semicolon-separated statements are formatted as a single script with configurable blank lines between queries.

What size queries can it handle?

Anything up to a few MB works smoothly. We cap file uploads at 10MB.

What does "Dense operators" do?

It removes whitespace around operators like =, +, - so you get a=b instead of a = b. Useful for code-golf and compact migrations.

Does it work on mobile?

Yes — both panes stack vertically and all toolbar controls wrap responsively.