πŸ¦€ Rust Formatter

Updated: 2026-07-12
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How to Use the Rust Formatter

Using the Rust Formatter is simple:

  1. Paste Code
    Paste your Rust code into the input area. All processing runs locally in your browser.
  2. Adjust Settings
    Choose indentation size, brace style, and other options.
  3. Copy or Download
    Click format, then copy or download the result. Completely free.

Formatting Options

Indent:
Braces:
Original: 0 lines
Formatted: 0 lines
βœ“ Copied

About Rust Formatting

This tool helps you auto-beautify Rust code:

β€’ Auto Indentation β€” Detect code block nesting levels
β€’ Brace Style β€” K&R (same-line {) or Allman (next-line {)
β€’ Operator Spacing β€” Add proper spaces around operators
β€’ Blank Line Cleanup β€” Remove consecutive blank lines
β€’ Rust-style indentation β€” Default 4 spaces (rustfmt standard)
Note: This tool provides basic formatting without complex AST analysis. All processing is done locally in your browser.

Frequently Asked Questions (FAQ)

Will formatting change my code's logic?

No. Formatting only adjusts whitespace and layout. The code remains functionally identical.

What's the difference between K&R and Allman brace styles?

K&R places the opening brace on the same line (if (x) {), while Allman places it on a new line. Both are valid; it's a matter of preference.

Which syntax features are supported?

Supports basic Rust syntax structures including functions, classes, and control flow. For complex nesting, consider using an IDE formatter.