Online Rust Compiler
main
// Online Rust compiler to run Rust code in the browser.
// Write Rust code in this online editor and see instant output.
fn greet() {
println!("Hello, Tutorsbot!");
}
fn main() {
greet();
}
Rust guarantees memory safety without a garbage collector. Run Rust online — hands-on practice with ownership, borrowing, and fearless concurrency.
Free Online Rust Compiler — Rust in Your Browser
Run Rust online without installing rustup, Cargo, or any toolchain. This playground executes your code in a sandboxed cloud environment with the full standard library available, so you can prototype an async function, test a borrow-checker-friendly API design, or rehearse a Rust-specific interview question — all without a 200 MB toolchain download. The editor uses the same professional code editor used by millions of developers, so IntelliSense and rust-analyzer-style hints match your local setup.
Rust Playground for Systems Developers
Common use cases: prototype a `Result`-based error-handling pattern before committing to it, test an ownership-friendly data structure, rehearse a borrow-checker exercise (linked lists, trees, graphs) in front of an interview panel, or share a runnable example with a teammate. The compiler reports both rustc errors with the iconic structured diagnostics (the ones with arrows pointing at the offending code) and the runtime output. For a guided path beyond playground experimentation, see Tutorsbot's Rust Training and Systems Programming Training programmes.
Modern Rust Features Supported
Rust with the full language: ownership and borrowing, lifetimes, traits, generics, async/await, macros (procedural and declarative), `?` for error propagation, `match` expressions, pattern matching, and the `let-else` and `let-chains` syntax. The standard library is fully available: `std::collections`, `std::io`, `std::fs`, `std::net`, `std::sync`, `std::thread`.
Is the Online Rust Compiler Free?
Yes — 100% free for evaluation, learning, and interview preparation. No account, no captcha, no per-day limit. For production features (multi-file Cargo projects, custom dependencies, persistent repls, scheduled jobs), see Tutorsbot's Rust Training and Systems Programming Training programmes.
What You Get With the Online Rust Playground (Edition 2021)
The compiler runs rustc with the 2021 edition enabled. The full standard library is available: `std::collections`, `std::fs`, `std::io`, `std::net`, `std::sync`, `std::thread`, `std::time`, `std::path`, plus the entire `std::iter` family of iterator adapters. Pattern matching, lifetime annotations, traits, generics, closures, and `?` operator all work. Cargo (the package manager) is not available, so no third-party crates (`serde`, `tokio`, `reqwest`, etc.) — but `serde_json` would be a great candidate for a future addition. Multi-file projects are not supported; concatenate into a single file. Compiler errors surface with both the JSON-style and the pretty-printed explanation so beginners can decode them.
Why use the Rust online compiler?
- Rust with full standard library support
- Ownership, borrowing, lifetimes, async/await, traits, generics, macros
- Compile errors with rustc's structured diagnostic format
- Persistent workspace with autosave to localStorage
Frequently Asked Questions
- Is the Rust online compiler free?
- Yes — Tutorsbot's Rust compiler is completely free. No account required, no installation, and no usage limits.
- Do I need to install Rust?
- No. The Rust compiler runs entirely in your browser. No runtime, no SDK, no PATH configuration. Open the page and start coding.
- Is my Rust code saved between sessions?
- Yes — your code autosaves to your browser's local storage so you can resume where you left off. You can also generate a shareable URL.
- Can I share Rust code with others?
- Yes. Click the Share button to copy a URL that encodes your script. Anyone with the link can open and run it instantly — no account required on their end.
- Is the Rust compiler safe to use?
- Absolutely. Every program runs in an isolated sandbox. Your local system is never exposed to the executed code, and nothing is persisted after the execution window.