7 Best Free SQL Formatters Online (2026) — Compared
March 22, 2026 · 8 min read
Unformatted SQL is hard to debug, harder to review, and nearly impossible to maintain. Whether you're dealing with a 200-line stored procedure or a quick ad-hoc query, a good SQL formatter saves real time. But which free online tool actually does the best job?
I tested 7 free SQL formatters with the same complex query — a multi-join SELECT with subqueries, CASE statements, and CTEs — and compared the results across formatting quality, dialect support, and usability.
Quick Comparison
| Tool | Dialect Support | Indent Options | Uppercase Keywords | Handles CTEs | Privacy |
|---|---|---|---|---|---|
| UtilShed | Standard SQL, MySQL, PostgreSQL, T-SQL | 2/4 spaces, tabs | Yes | Yes | Client-side only |
| SQLFormat.org | Generic SQL | Limited | Yes | Partial | Server-side |
| DPriver | Oracle, MySQL, PostgreSQL, SQL Server, DB2 | Multiple | Yes | Yes | Server-side |
| Instant SQL Formatter | Generic SQL | 2/4 spaces | Yes | Partial | Server-side |
| EverSQL | MySQL, PostgreSQL, SQL Server | Auto | Yes | Yes | Server-side |
| Code Beautify | Generic SQL | 2/4 spaces | Yes | Partial | Server-side |
| FreeFormatter.com | Generic SQL | Tabs only | Yes | No | Server-side |
Tool-by-Tool Breakdown
1. UtilShed SQL Formatter
Best for: Quick formatting with full privacy — nothing leaves your browser.
UtilShed's SQL formatter runs entirely client-side using the sql-formatter library. It supports multiple SQL dialects (Standard SQL, MySQL, PostgreSQL, T-SQL, PL/SQL), configurable indentation, keyword casing options, and handles CTEs, subqueries, and CASE statements cleanly.
Pros: 100% client-side (your queries never leave the browser), dialect-aware formatting, configurable indent width, one-click copy, clean dark UI.
Cons: No syntax highlighting in the output (plain text), no line numbering.
Open SQL Formatter →
2. SQLFormat.org
Best for: Simple queries when you don't need dialect-specific formatting.
One of the oldest online SQL formatters. Powered by Python's sqlparse library. Handles basic SELECT/INSERT/UPDATE well but struggles with complex CTEs and window functions.
Pros: Simple interface, fast, supports API access.
Cons: Server-side processing (your SQL is sent over the network), limited dialect support, inconsistent CTE formatting.
3. DPriver SQL Formatter
Best for: Enterprise SQL dialects like Oracle and DB2.
DPriver (GuduSoft) has the widest dialect support including Oracle PL/SQL, DB2, Teradata, and Netezza. The output formatting is highly configurable with options for alignment, line breaks, and comment handling.
Pros: Widest dialect support, many formatting options, handles stored procedures well.
Cons: Cluttered UI, ads, server-side processing, slower than simpler tools.
4. Instant SQL Formatter
Best for: Quick formatting of moderate-complexity queries.
Clean interface with fast results. Handles joins and subqueries well. Struggles with deeply nested CTEs and some PostgreSQL-specific syntax (array operations, LATERAL joins).
Pros: Clean UI, fast, decent output quality.
Cons: Server-side, no dialect selection, limited CTE handling.
5. EverSQL Formatter
Best for: Formatting + optimization suggestions in one tool.
EverSQL is primarily a query optimizer but includes a solid formatter. It can suggest index improvements and query rewrites alongside formatting. Requires sign-up for full features.
Pros: Optimization suggestions, good CTE support, dialect-aware.
Cons: Account required for full features, server-side, ads on free tier, slower.
6. Code Beautify SQL Formatter
Best for: If you already use Code Beautify for other languages.
Part of the Code Beautify suite. Consistent interface across languages but SQL-specific features are limited compared to dedicated tools.
Pros: Familiar if you use Code Beautify, supports file upload.
Cons: Generic formatting (no dialect awareness), heavy ads, server-side processing.
7. FreeFormatter.com
Best for: Basic queries only — not recommended for complex SQL.
Minimal tool that handles simple SELECT/INSERT/UPDATE. Breaks on CTEs, window functions, and most PostgreSQL-specific syntax.
Pros: Simple, no distractions.
Cons: No CTE support, tabs only (no space indent option), server-side, no dialect selection.
Why Privacy Matters for SQL Formatting
Most SQL formatters send your query to a server for processing. If your query contains table names, column names, or WHERE clauses with business logic, that's potentially sensitive information leaving your machine.
Client-side formatters (like UtilShed) process everything in your browser — the SQL never leaves your computer. This matters especially for:
- Queries containing customer data or PII in WHERE clauses
- Proprietary table schemas that reveal business logic
- Queries from production databases with real table/column names
- Organizations with data handling policies that restrict external processing
CLI Alternatives
If you prefer the command line, these tools format SQL locally:
sqlfluff is worth highlighting — it doesn't just format, it also lints your SQL for style issues, unused aliases, and anti-patterns.