Rust Online Compiler

Write, compile, and run Rust code online for free. Use custom standard input and view program output without installing rustc.

Run the program
Output
Run Rust Code Online
This free Rust online compiler runs a single source file named main.rs in an isolated execution environment. Edit the starter program, provide optional input, and select Run to see standard output and compiler errors.
How to Use the Rust Compiler
  1. Write or paste a complete Rust program in the code editor.
  2. Add input in the Input tab when the program reads from standard input.
  3. Select Run. Compilation errors, runtime errors, and program output appear in the Output panel.
Rust Execution Notes
Submit a complete Rust program with a main function. External Cargo crates are not available in this single-file compiler.
Programs can read values using std::io::stdin. Execution time, memory, processes, output size, and network access are limited to keep the shared compiler responsive and secure.
Frequently Asked Questions
Do I need to install Rust?
No. Compilation and execution happen remotely, so the editor works from a modern browser on desktop or mobile.
Can I provide input to my program?
Yes. Enter one or more lines in the Input tab before selecting Run. The text is passed to the program through standard input.
Continue learning with the Rust tutorials and examples.