Online Ruby Compiler – Run Ruby Online (3.1, 3.2, 3.3)
Write, compile, and run Ruby code instantly in your browser. This free online Ruby compiler needs no installation or signup — just type your Ruby program, click Run, and see the output. Supports stdin, multi‑file projects, shareable snippet URLs, and AI help to generate, fix, and explain Ruby code.
About Online Compiler
Our free online compiler lets you write, compile, and run code instantly in your browser. Supports Python, Java, C++, JavaScript, Go, Rust, and many more languages. No installation required.
Compare Languages Side by Side
Want to see how Ruby stacks up against another language? Open the Code Playground to run Ruby next to Python, Go, Rust, or any language — each pane picks its own language and version, and you run them together.
Supported Languages
Popular: Python, Java, C++, C, JavaScript, TypeScript, Go, Rust
Web: PHP, Ruby, Node.js, HTML/CSS
Systems: C, C++, Rust, Go, Swift
Functional: Haskell, Scala, Kotlin, F#, Clojure
Features
- Monaco Editor (VS Code) with syntax highlighting
- Real-time code execution with output streaming
- Custom compiler flags support (-O2, -Wall, etc.)
- Share code via unique snippet URLs
- Keyboard shortcuts (Ctrl+Enter to run)
Run Ruby Online (3.1, 3.2, 3.3)
Write and run Ruby online. Choose Ruby 3.1, 3.2, or 3.3. Great for kata practice, scripts, and teaching examples.
FAQ
Which Ruby versions are available? Ruby 3.1, 3.2, and 3.3 are available.
How do I share code? Click Share to generate a snippet URL.
Are gems supported? Use self‑contained examples; gem availability varies by template.
How to Use Online Compiler
Choose from 60+ programming languages including Python, Java, C++, JavaScript, Go, Rust, and more.
Use our Monaco editor (same as VS Code) with syntax highlighting, auto-completion, and error detection.
Click Run or press Ctrl+Enter. Your code executes in a secure sandbox and output appears instantly.
Share your code via unique URL or embed interactive code snippets in your blog, book, or documentation.
For Authors, Educators & Technical Writers
Perfect for programming books, online tutorials, technical documentation, and educational content. Embed interactive, runnable code examples directly in your content.
Click Embed button above to generate embed code for your content!
Example: Hello World in Ruby
def greet(name)
"Hello, #{name}!"
end
puts greet("World")Copy this Ruby snippet into the editor above and click Run to execute it instantly — no setup required.
Popular Online Compilers
Jump straight to a language-specific page:
Need embeds? See Embed Online Compiler.