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Ruby 3.3

Online Ruby Compiler

Run Ruby 3 scripts with object-oriented blocks, gems and string processing. Write code with auto-formatting, test with standard input (stdin), and inspect terminal output in real-time.

✓ Ruby 3.3 syntax and object model✓ Blocks, procs, and lambdas✓ Enumerable operations✓ STDIN reading support
main.rb
Ruby 3.3
13px
Standard Input (stdin)
Passed to scanf, input(), cin, etc.
UTF-8Ruby2 SpacesWrap: Off
Ctrl+Enter to Run
Ln 1, Col 116 lines439 chars
Output & ConsoleIdle

Ready to Compile & Run

Click the blue ▶ Run button in the header bar or press Ctrl + Enter to compile and execute your Online Ruby Compiler.

How to Run Ruby Code Online

Execute elegant, expressive Ruby code with blocks and standard libraries.

  1. Write Ruby code, press "▶ Run", and inspect the terminal output.

Common Errors & Troubleshooting

Encountering compilation or runtime diagnostics? Check these common scenarios:

undefined local variable or methodCheck variable scope and spelling.

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Frequently Asked Questions (Ruby)

Yes, modern Ruby 3 syntax is supported.