Clang C Formatter

C

Online clang formatter to format C code according to LLVM standards. Format your code directly in your browser. It runs in your browser, and your input stays on this device.

Back to C Formatter

Formatter example

Compare the exact input shape with the cleaned output before opening the editor.

Local preview

Before

input
function c(){return true}

After

formatted
function c() {
  return true
}

Workflow

Use C without sending code.

Paste a snippet, run the action, review any highlighted issue, then copy the result back to your work.

Current language
C
Current action
Clang C Formatter
  1. 01

    Start

    Paste a snippet or full file into the editor.

  2. 02

    Run

    Use Run Clang C Formatter from the action bar.

  3. 03

    Review

    Fix syntax issues if processing stops.

  4. 04

    Move

    Use Copy code when the result is ready.

Files
.c, .h
Paste a C snippet or a full source file.
Engine
clang-format
Runs the browser-side formatter for readable output.
Privacy
Local run
The editor does not send pasted code to a formatting API.
Result
Readable output
Move the formatted code back to your editor.