Online Python Compiler
Write and run Python code directly in your browser — powered by WebAssembly. Full Python 3.11 with stdlib, Monaco editor, and instant execution. Free, fast, and runs 100% in your browser.
Learning Python, prototyping algorithms, or testing quick scripts — all without installing anything. This browser-based compiler runs real Python 3.11 via WebAssembly (Pyodide), providing a full development environment with Monaco editor, syntax highlighting, and instant output. Your code never leaves your device.
Output will appear here
Press Run or Ctrl+Enter to execute
Feature Overview
| Feature | Details |
|---|---|
| Python 3.11 | Full |
| Monaco editor | ✓ |
| Standard library | Complete |
| Package support | micropip |
| Privacy | 100% client-side |
Frequently Asked Questions
How does Python run in a browser?
Pyodide compiles CPython to WebAssembly, running a full Python 3.11 interpreter directly in your browser — no server needed.
Does it support pip packages?
Standard library is fully available. Popular packages like numpy and pandas can be loaded via micropip.
Is my code saved?
No. Code stays in your browser session only. Copy your code before closing the tab.