Rust 1.52.1

Online Rust Compiler & Editor

Name: myCompiler Rust
Author: myCompiler

myCompiler is a free online Rust compiler, editor and code runner that lets you write, run, and share Rust code directly in your browser. It works as your Rust playground, sandbox, fiddle, cloud compiler, and online REPL. No downloads, no installation needed. Just open the editor and start coding with syntax highlighting, autocomplete, and instant output.

Start coding in Rust How it works

27+ languages Used by 1M+ developers Free forever

main.rs

fn main() {
    let numbers = vec![5, 2, 8, 1, 9];
    let sum: i32 = numbers.iter().sum();
    let max = numbers.iter().max().unwrap();

    println!("Numbers: {:?}", numbers);
    println!("Sum: {}, Max: {}", sum, max);
}

Output

Numbers: [5, 2, 8, 1, 9] Sum: 25, Max: 9

How to run Rust code online

Three steps to go from idea to running Rust code in this online playground. No account required.

Write your code

Open the Rust editor and start writing. The smart editor gives you syntax highlighting, autocomplete, and error detection as you type.

Click Run

Hit the Run button or press +Enter to run your Rust code on secure, sandboxed cloud servers.

See results

Output appears instantly in the integrated terminal. Errors and exceptions show up with clear, helpful messages.

Everything you need to code in Rust

A complete online Rust IDE and coding playground in your browser. Write, run, and share code without any setup.

Zero setup required

Start coding in seconds with this browser-based Rust interpreter. No downloads, no installations, no environment configuration. Open your browser, go to myCompiler, and start writing Rust code immediately.

Works on any device with a web browser. Desktop, laptop, tablet, phone, Chromebook. There is nothing to install and nothing to configure.

Feature-rich code editor

Write Rust with a professional-grade code editor built into your browser. Syntax highlighting colors your code for readability, making keywords, strings, and functions easy to distinguish at a glance.

Intelligent autocomplete suggests methods and properties as you type, and real-time error detection catches mistakes before you run your code.

Multi-file projects

Create and manage multiple files in a single project. Use the file sidebar to organize your code into modules, then import them across files just like in a desktop IDE.

Build modular applications with proper project structure. Each file is editable, and you can switch between them instantly.

Run code instantly

Click the Run button or press +Enter to execute your Rust code instantly. This online code runner displays output immediately in the integrated terminal panel. Your code runs on secure, sandboxed cloud servers and results appear in seconds.

Error messages and tracebacks are displayed clearly, making it easy to find and fix issues. The terminal supports ANSI colors for rich output formatting.

Ready to try it? Write and run your first Rust program in seconds.

Open Rust editor

Rust on myCompiler

myCompiler runs Rust 1.52.1, always up to date with the latest stable release. You get a full browser-based IDE with syntax highlighting, intelligent code completion, multi-file project support, a built-in terminal for real-time output, and standard input (stdin) for interactive programs. Write, compile, run, and debug Rust code on any device. Desktop, laptop, tablet, phone, Chromebook. Zero downloads, zero configuration, and no sign-up required. Save your programs with a unique URL and share them with anyone. You can also embed a working Rust editor on your own website.

Use this online Rust playground as a quick code executor for testing snippets, a coding sandbox for learning, or a cloud compiler for coding interview preparation. The editor includes dark mode for comfortable coding, keyboard shortcuts for faster workflows, and clear error messages with line numbers so you can debug quickly. Students use it for homework and practice. Teachers use it to share working examples. Developers use it to prototype ideas. myCompiler is beginner-friendly, fast, and completely free. It works in any modern web browser.

Start coding in Rust

Rust code examples

Common Rust patterns you can try in the online compiler. Each example is ready to run.

Hello World in Rust

main.rs

fn main() {
    println!("Hello, World!");
}

Variables and Data Types in Rust

main.rs

fn main() {
    let name: &str = "Alice";
    let age: u32 = 30;
    let height: f64 = 5.6;
    let is_student: bool = true;
    println!("{} is {} years old", name, age);
}

If-Else Conditionals in Rust

main.rs

fn main() {
    let x = 10;
    if x > 0 {
        println!("Positive");
    } else if x == 0 {
        println!("Zero");
    } else {
        println!("Negative");
    }
}

For and While Loops in Rust

main.rs

fn main() {
    for i in 1..=5 {
        println!("Count: {}", i);
    }

    let fruits = ["apple", "banana", "cherry"];
    for fruit in &fruits {
        println!("{}", fruit);
    }
}

Functions in Rust

main.rs

fn greet(name: &str, greeting: &str) -> String {
    format!("{}, {}!", greeting, name)
}

fn main() {
    println!("{}", greet("Alice", "Hello"));
    println!("{}", greet("Bob", "Hi"));
}

Arrays and Collections in Rust

main.rs

use std::collections::HashMap;

fn main() {
    let mut fruits = vec!["apple", "banana", "cherry"];
    fruits.push("date");
    println!("{}", fruits[1]);

    let mut person = HashMap::new();
    person.insert("name", "Alice");
    println!("{}", person["name"]);
}

Structs and Impl in Rust

main.rs

struct Dog {
    name: String,
    breed: String,
}

impl Dog {
    fn new(name: &str, breed: &str) -> Self {
        Dog { name: name.to_string(), breed: breed.to_string() }
    }
    fn bark(&self) -> String {
        format!("{} says Woof!", self.name)
    }
}

fn main() {
    let dog = Dog::new("Rex", "Labrador");
    println!("{}", dog.bark());
}

Error Handling in Rust

main.rs

use std::num::ParseIntError;

fn parse_number(s: &str) -> Result<i32, ParseIntError> {
    s.trim().parse()
}

fn main() {
    match parse_number("not a number") {
        Ok(n) => println!("Parsed: {}", n),
        Err(e) => println!("Error: {}", e),
    }
}

File I/O in Rust

main.rs

use std::fs;
use std::io::Write;

fn main() {
    let mut file = fs::File::create("output.txt").unwrap();
    file.write_all(b"Hello, File!").unwrap();

    let content = fs::read_to_string("output.txt").unwrap();
    println!("{}", content);
}

Ownership and Borrowing in Rust

main.rs

fn take_ownership(s: String) -> String {
    println!("Got: {}", s);
    s
}

fn borrow(s: &str) -> usize {
    s.len()
}

fn main() {
    let s1 = String::from("hello");
    let s2 = take_ownership(s1);
    let len = borrow(&s2);
    println!("{} has {} chars", s2, len);
}

Try these examples in the editor

How to take input in Rust online

myCompiler supports standard input (stdin) for Rust programs. Use Rust's standard input functions to read user input. Enter your input data in the stdin panel before running your program.

This works for both single-line and multi-line input. You can read strings and convert to numbers using the language's built-in I/O functions.

Try it yourself

main.rs stdin supported

use std::io;

fn main() {
    let mut name = String::new();
    io::stdin().read_line(&mut name).unwrap();
    let name = name.trim();

    let mut age_str = String::new();
    io::stdin().read_line(&mut age_str).unwrap();
    let age: i32 = age_str.trim().parse().unwrap();

    println!("Hello {}!", name);
    println!("You'll be {} next year.", age + 1);
}

stdin

Alice
25

Output

Hello Alice!
You'll be 26 next year.

No setup, no sign-up. Start writing Rust code right now.

Start coding now

Getting started with Rust online

You can start writing and running Rust code right now without installing anything. Type your code, and click Run. This free Rust code runner executes your program instantly and displays the output in the terminal panel below the editor. Open the Rust online editor, type your code, and click Run.

If you're new to Rust, use this online Rust playground to start with the basics like variables, data types, conditionals, and loops. The code examples above cover all the fundamentals you need to get started. Each example can be copied into the sandbox and run immediately. No setup, no configuration.

As you progress, try creating multi-file projects, using libraries, and sharing your programs with others via URL. Sign up for a free account to save your work and build a personal library of programs. myCompiler works as a full online Rust IDE right in your browser.

Who uses myCompiler

Whether you're learning to code, preparing for interviews, or prototyping ideas, myCompiler is built for you.

Students & Learners

Practice exercises, complete homework assignments, and experiment with code without installing anything on school or personal computers.

Teachers & Educators

Share code examples with students via unique URLs. Embed the compiler in course materials so students can run examples directly in the browser.

Interview Candidates

Practice coding interview problems, test algorithms, and verify solutions quickly during preparation for technical interviews.

Professional Developers

Quickly prototype ideas, test code snippets, or try out a library without setting up a local environment. Great for quick experiments.

Content Creators & Bloggers

Embed interactive examples in blog posts, tutorials, and documentation so readers can run code without leaving the page.

Teams & Collaborators

Share code snippets with colleagues via URLs. Others can view, run, and fork your code to build on your work.

myCompiler vs. local IDE

Why use an online Rust compiler instead of installing one locally?

Feature	myCompiler	Local IDE
Setup time	Instant	Minutes to hours
Installation	None required	Rust + IDE required
Device support	Any browser	Desktop only
Sharing code	One-click URL	Manual (file, git, etc.)
Languages	27+ in one place	One at a time
Cost	Free forever	Free to $$$
Works on Chromebook	Yes	Limited

What is Rust?

Rust is a systems programming language focused on safety, speed, and concurrency. Originally developed by Graydon Hoare at Mozilla and first released in 2015, Rust was designed to eliminate entire classes of bugs, buffer overflows, null pointer dereferences, use-after-free errors, and data races, that plague C and C++ programs. Rust has been voted the "most loved" programming language in Stack Overflow's Developer Survey every year from 2016 to 2023.

Rust achieves memory safety without a garbage collector through its innovative ownership and borrowing system, rules enforced at compile time that track how memory is used and ensure it is always valid. This gives Rust the performance of C while providing guarantees that prevent entire categories of security vulnerabilities. The Linux kernel, Android, Windows, and AWS cloud infrastructure now include Rust code.

What is Rust used for?

Rust is used for systems programming, operating systems components, device drivers, and embedded firmware, WebAssembly (Rust is the most popular language for compiling to WASM), networking tools and proxies (Cloudflare, Discord, and Fastly use Rust), game engines, command-line tools (many modern Unix tools like ripgrep, fd, and bat are written in Rust), and blockchain development (Solana's blockchain is written in Rust).

Rust for beginners

Rust has a steep learning curve, the ownership and borrow checker concepts are unlike anything in other languages. However, the Rust compiler is exceptionally helpful, providing detailed error messages that explain exactly what rule you violated and how to fix it. Once you internalize ownership, many programs that would have crashes or memory bugs in C just work correctly. Use myCompiler's online Rust compiler to practice Rust's ownership model, structs, enums, and traits.

Rust vs other languages

Compared to C/C++, Rust offers the same performance but with compile-time memory safety guarantees, eliminating most classes of security vulnerabilities at zero runtime cost. Compared to Go, Rust gives finer control over memory and achieves higher performance, but Go is significantly easier to learn and has faster compilation. Compared to Python, Rust is dramatically faster and suitable for systems programming, but Python is far more productive for scripting and data science.

Why use an online Rust compiler?

An online Rust compiler, also called a Rust playground or Rust sandbox, lets you compile and run Rust code directly in your browser without installing the Rust toolchain. This is ideal for learning the ownership and borrow checker, experimenting with Rust's type system, practicing pattern matching and error handling with Result and Option, and understanding lifetimes without local setup.

myCompiler's online Rust IDE uses rustc with the full Rust standard library. You get complete Rust compiler error messages including ownership and lifetime diagnostics. The std library, including collections, I/O, and threading primitives, is available. Save and share Rust programs via URL, completely free.

Why is Rust so popular?

Rust's seven consecutive years as "most loved" language on Stack Overflow reflects exceptional developer satisfaction. The language delivers on its promise. once code compiles in Rust, it is almost always correct in terms of memory safety and thread safety. Major tech companies including Google, Microsoft, Amazon, Meta, and Cloudflare have adopted Rust for performance-critical and security-sensitive systems. Rust's inclusion in the Linux kernel was a historic milestone that cemented its role in systems programming.

Rust career opportunities

Rust expertise is valued for systems engineer, embedded developer, WebAssembly developer, blockchain developer, and performance engineer roles. Rust positions command among the highest salaries in software engineering. As more companies adopt Rust for security-critical code, demand for Rust developers is growing rapidly, particularly at cloud providers, security companies, and firms building high-performance infrastructure.

Try Rust online Free · No sign-up needed

Keyboard shortcuts

Code faster with these keyboard shortcuts in the myCompiler editor.

Run code

+ Enter

Save program

+ S

Toggle comment

+ /

Indent line

Tab

Unindent line

Shift + Tab

Undo

+ Z

Select next occurrence

+ D

Find & replace

+ H

Embed the Rust compiler on your website

Add an interactive Rust compiler to your website, blog, or learning platform. Readers can write and run Rust code directly on your page without leaving it.

Perfect for technical tutorials, coding courses, documentation, and educational content. Save a program on myCompiler and use the embed link to add it to any webpage.

Embedded Rust compiler, editor and code runner

HTML

<iframe
src="https://www.mycompiler.io
    /embed/rust"
width="100%"
height="400"
frameborder="0">
</iframe>

Why developers choose myCompiler

A full-featured online IDE for Rust and 27+ other programming languages.

27+ Languages

Python, JavaScript, Java, C++, Rust, Go, TypeScript, C#, and many more. All compilers and interpreters in one place. Switch languages instantly.

Dark & Light Mode

Switch between light and dark themes with one click. Code comfortably in any lighting condition, day or night.

Mobile Friendly

Fully responsive editor optimized for phones, tablets, and Chromebooks. Code on any device with a web browser. No app download needed.

Save & Share Code

Save programs to your account, share via unique URLs, and let others view, fork, and run your code. Great for collaboration and code reviews.

Tags & Organization

Organize your saved programs with tags and find them quickly with search and filters. Build a personal library of code snippets and solutions.

No Account Required

Start writing and running code immediately. No sign-up, no email, no credit card. Create a free account later only if you want to save your work.

Explore more programming languages

myCompiler supports 27+ languages. Switch between them anytime. All free, all in one place.

View all 27+ languages

Frequently asked questions

Common questions about using the online Rust compiler, playground, and code runner.

Yes! myCompiler is completely free for all supported languages including Rust. There are no subscriptions, no premium tiers, and no hidden costs. Every feature is available at no charge.

myCompiler keeps its Rust environment up to date. You can see the exact version on the language details section of this page. We regularly update all language runtimes to their latest stable versions.

Rust's ownership and borrowing rules are enforced by the compiler. On myCompiler, you get full Rust compiler error messages including ownership and lifetime errors, helping you learn Rust's memory safety model.

Simply open the Rust editor, write or paste your code, and click the Run button. Your code will be executed on our servers and the output will appear in the terminal panel within seconds.

Yes. Click Save to store your program. You will receive a unique URL that you can share with anyone. Recipients can view, fork, and run your code.

Yes. myCompiler supports multi-file projects. You can create, rename, and delete files in the sidebar. This lets you organize your Rust code just like in a local IDE.

Yes. All code runs in isolated containers on our servers. Each execution gets its own sandboxed environment that is destroyed after completion. Your code cannot affect other users or our infrastructure.

Yes. myCompiler has a responsive design optimized for phones and tablets. You can write and run Rust code on the go. The mobile interface uses tabs for switching between the editor, output, and file panels.

Yes. Click the Input tab in the bottom panel, type or paste your input data, then click Run. Your program will read from the input you provided.

Execution is fast. Code runs on our optimized cloud infrastructure and output typically appears within seconds. Execution time depends on the complexity of your program.

Yes. myCompiler provides an embed feature. You can copy an iframe snippet and paste it into your website, blog, or documentation. Visitors can edit and run code directly on your page.

myCompiler supports common editor shortcuts including Run (Ctrl/Cmd+Enter), Save (Ctrl/Cmd+S), Find (Ctrl/Cmd+F), and more. See the keyboard shortcuts section on this page for the full list.

No. myCompiler requires an internet connection because code is compiled and executed on our cloud servers. The editor itself loads in your browser, but running code requires connectivity.

myCompiler offers a fast, free, zero-setup environment with a modern code editor, multi-file support, dark mode, and instant sharing. It is ideal for learning, prototyping, interviews, and sharing code examples.

Yes. myCompiler is great for practicing algorithms and coding problems. You can write Rust code, provide custom input, and test your solutions instantly. Save your work and come back to it anytime.

Use print statements or console output to trace your program's behavior. myCompiler shows all standard output and error messages in the terminal panel. Error messages include line numbers to help you locate issues.

Ready to write Rust code?

Open the free Rust playground and start coding immediately. No downloads, no account required.

Start coding in Rust

Free · No sign-up required · Rust 1.52.1