Which SQL dialects are supported?

Postgres, MySQL, SQL Server (T-SQL), BigQuery, Snowflake, Redshift, MariaDB, SQLite, and standard SQL. Powered by the open-source sql-formatter library.

Is anything sent to a server?

No. Formatting happens entirely in your browser using the sql-formatter npm package, loaded as part of the page bundle.

Does it work on stored procedures and CTEs?

Yes, multi-CTE queries, window functions, and stored procedure bodies all format. Dialect-specific syntax (like Snowflake's QUALIFY) is preserved.

Will it fix syntax errors?

No. It formats; it does not parse semantically. If your SQL is syntactically broken, the formatter will still indent it but the resulting query will not execute.

Can I disable uppercasing of keywords?

Yes, keyword case is configurable (UPPER, lower, preserve).

What is the largest query I can format?

No hard limit. Queries up to ~50,000 characters format instantly. Very large generated SQL (1M+ chars) may take a few seconds.

Why does my formatted SQL look slightly different from my IDE?

Every formatter has style opinions: comma placement, JOIN indenting, CASE alignment. We default to the most widely-used conventions; toggle the options to match your team's house style.

Does FireAI write SQL for me?

Yes, FireAI converts plain-English questions into SQL queries on top of your data. You read English; FireAI runs the SQL.

Data & developer · Free tool

SQL Formatter & Beautifier

Paste any SQL query and get it cleanly indented, uppercase keywords, and dialect-aware formatting. Supports Postgres, MySQL, SQL Server, BigQuery, Snowflake. Everything runs in your browser.

Try FireAI free

Dialect

Indent

Keyword case

Input SQL

Formatted

SELECT
  c.customer_id,
  c.name,
  sum(o.total) AS ltv
FROM
  customers c
  LEFT JOIN orders o ON o.customer_id = c.customer_id
WHERE
  c.created_at >= '2025-01-01'
  AND o.status = 'paid'
GROUP BY
  1,
  2
HAVING
  sum(o.total) > 1000
ORDER BY
  ltv DESC
LIMIT
  50;

Formatting runs entirely in your browser via the open-source sql-formatter library.

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Supported dialects

PostgreSQL, MySQL, SQL Server (T-SQL), BigQuery, Snowflake, Redshift, SQLite, MariaDB, and standard SQL. Each uses its own keyword list and indentation rules: picking the right dialect avoids accidental keyword mis-casing.

Privacy

The SQL you paste never leaves your browser. The open-source sql-formatter library is loaded as part of the page bundle and runs entirely client-side.

Why your IDE’s output differs

Every formatter has style opinions: comma placement, JOIN indenting, CASE alignment. The defaults here match the most widely-used conventions; toggle the options to match your team’s house style.

Skip writing SQL entirely

For analytics, you do not actually need to write SQL. FireAI converts natural-language questions into SQL queries on top of your data - how NLQ-to-SQL works.

Get this calculator running on your live data

Try FireAI free — go from one-off calculations to a live dashboard updated every hour.

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