RunLocalTools

SQL Formatter & Beautifier Locally In Seconds

Format messy, minified, or hard-to-read SQL into clean, structured, readable queries in seconds.

This SQL formatter and beautifier automatically adds indentation, line breaks, spacing, and consistent keyword formatting so your SQL is much easier to read, understand, debug, review, and maintain.

Paste your SQL, choose your database dialect and formatting preferences, then format it instantly in your browser.

Why Use This SQL Formatter?

SQL can become difficult to read when it has been generated by applications, copied from logs, compressed into a single line, or written without consistent formatting.

A good SQL formatter turns that messy query into a structured version that makes clauses, conditions, joins, subqueries, functions, and nested expressions easier to follow.

This tool supports 19 SQL dialects, including popular databases and data platforms such as MySQL, PostgreSQL, SQL Server, Oracle, SQLite, BigQuery, Snowflake, and more.

Runs in Your Browser

Your SQL is processed locally in your browser rather than being sent to a database or remote server for formatting.

The formatting library is loaded from a CDN when needed, while the actual SQL formatting happens locally in your browser.

This makes the tool useful when working with SQL that you would rather not send to an online processing service.

Important: sharing a query with the Share Link feature puts the SQL itself into the URL. Avoid creating share links containing sensitive or confidential SQL.

SQL Formatter Features

Format SQL

Turn compressed or poorly formatted SQL into clean, readable SQL with proper indentation and line breaks.

Beautify SQL

Improve the readability of complex queries by organizing SELECT statements, JOINs, WHERE clauses, GROUP BY, ORDER BY, subqueries, and other SQL structures.

Minify SQL

Need the opposite? Switch to Minify mode to compact SQL by removing unnecessary whitespace and comments.

The minifier uses a lightweight text-based approach and can be useful when you need a compact query even when strict formatting is not possible.

Choose Keyword Case

Format SQL keywords as:

  • UPPERCASE

  • lowercase

  • Preserve existing case

Choose Indentation

Control how formatted SQL is indented:

  • 2 spaces

  • 4 spaces

  • Tabs

SQL Dialect Support

Choose the SQL dialect that best matches your query:

  • Standard SQL

  • MySQL

  • MariaDB

  • PostgreSQL

  • SQL Server / T-SQL

  • Oracle / PL-SQL

  • SQLite

  • Google BigQuery

  • Amazon Redshift

  • Snowflake

  • Spark SQL

  • Apache Hive

  • IBM DB2

  • IBM DB2i

  • Couchbase N1QL

  • Trino / Presto

  • TiDB

  • SingleStoreDB

  • ClickHouse

Selecting the appropriate dialect helps the formatter understand syntax that differs between database systems.

Lightweight SQL Warnings

The tool can also identify a few common patterns that deserve a second look before you run a query.

For example, it can warn when it detects:

  • SELECT *

  • An UPDATE statement without a WHERE clause

  • A DELETE FROM statement without a WHERE clause

  • Unresolved template placeholders such as ${...} or #{...}

These checks are intentionally lightweight. They are not a full SQL parser, validator, security scanner, or database execution test.

A warning does not necessarily mean your SQL is invalid, and the absence of a warning does not guarantee that a query is safe or correct.

Format SQL Online Without Connecting to a Database

This tool does not connect to MySQL, PostgreSQL, SQL Server, Oracle, or any other database.

It only formats the SQL text you provide.

That means you can use it for SQL copied from:

  • Database clients

  • Application code

  • Server logs

  • Query builders

  • Documentation

  • Code repositories

  • Data analysis workflows

  • Error messages

  • Development environments

You can format a query without providing database credentials or connecting the tool to your database.

Format SQL Files

Have an entire .sql file instead of a query you want to paste?

You can load a SQL file directly into the formatter. File reading happens locally in your browser, allowing you to work with SQL scripts without manually copying and pasting the entire file.

After formatting, you can download the result as a .sql file.

Copy SQL in Different Formats

The formatted query can be copied directly, or prepared for use in other programming environments.

Copy your SQL as:

  • Plain SQL

  • JavaScript string

  • Python string

  • JSON string

This is useful when your SQL needs to be placed inside application code, configuration files, scripts, or API payloads.

Save and Reuse Recent Queries

The formatter remembers your recent queries and formatting preferences in your browser.

This makes it easier to return to SQL you were recently working on without starting again from an empty editor.

You can also create a shareable link containing your SQL and selected dialect, making it easier to move a query between sessions.

SQL Formatter vs SQL Minifier

A SQL formatter makes SQL easier for humans to read.

It adds structure through indentation, spacing, line breaks, and consistent formatting.

A SQL minifier does the opposite. It removes unnecessary whitespace and comments to make the SQL more compact.

Use formatting when you are:

  • Debugging SQL

  • Reviewing queries

  • Learning SQL

  • Reading someone else’s code

  • Preparing SQL for documentation

  • Working with complex queries

Use minification when you need:

  • A compact SQL string

  • Less whitespace

  • A smaller text representation

  • A quick way to remove comments and unnecessary spacing

Common Uses for a SQL Beautifier

Clean Up Minified SQL

Convert a single-line SQL query into a readable multi-line query.

Debug Complex Queries

Readable indentation makes it easier to spot missing conditions, misplaced clauses, and confusing nested structures.

Review SQL Code

Make queries easier for developers and analysts to inspect during code reviews.

Prepare SQL for Documentation

Turn raw SQL into clean examples that are easier for readers to understand.

Work With Generated SQL

Application-generated SQL can often be difficult to read. Formatting it makes the underlying query structure easier to inspect.

Learn SQL

Beginners can use formatted queries to understand how SELECT, JOIN, WHERE, GROUP BY, ORDER BY, subqueries, and other SQL components fit together.

How to Format SQL

  1. Paste your SQL query into the editor.

  2. Select the SQL dialect you are using.

  3. Choose your preferred keyword case.

  4. Select your indentation style.

  5. Click Format SQL.

  6. Copy or download the formatted result.

You can also use Ctrl + Enter on Windows/Linux or Cmd + Enter on Mac to format your query.

Does Formatting Change My SQL Query?

The formatter is designed to change the presentation of your SQL rather than the intended query logic.

It adds whitespace, indentation, line breaks, and formatting around SQL structures.

However, you should always review important queries before running them, especially when working with production databases.

Is This a SQL Validator?

No.

This is primarily a SQL formatter and beautifier with a few lightweight heuristic checks.

It does not execute your SQL against a database and does not provide the same validation that comes from an actual database engine.

If formatting fails, the SQL may contain syntax that the selected dialect or formatter cannot parse.

What If My SQL Cannot Be Formatted?

First, make sure you selected the correct SQL dialect.

Different database systems have different syntax and features, so choosing the closest matching dialect can make a difference.

If strict formatting still fails, the Minify option may still be able to compact the SQL because it uses a separate lightweight text-based process.

Does the Tool Access My Database?

No.

The formatter does not connect to your database, execute queries, retrieve records, or require database credentials.

It works with the SQL text you provide.

Is My SQL Sent to a Server?

The SQL formatting itself happens locally in your browser.

The formatting library is downloaded from a CDN when the tool first needs it. Once loaded, the formatting functionality runs in your browser.

If you use the Share Link feature, however, your SQL is placed inside the generated URL, so do not use that feature for confidential queries.

What SQL Dialects Are Supported?

The formatter supports 19 dialects:

Standard SQL, MySQL, MariaDB, PostgreSQL, SQL Server (T-SQL), Oracle (PL/SQL), SQLite, Google BigQuery, Amazon Redshift, Snowflake, Spark SQL, Apache Hive, IBM DB2, IBM DB2i, Couchbase N1QL, Trino/Presto, TiDB, SingleStoreDB, and ClickHouse.

Choose the dialect that most closely matches the SQL you are working with before formatting.

Format Your SQL

Stop trying to read SQL that has been squeezed into one giant line.

Paste your query, choose your dialect, format it, and get clean SQL that is easier to read, understand, review, and work with.

Format SQL. Beautify SQL. Minify SQL. Keep your queries readable.