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Free online Python compiler · No account

The online Python compiler that runs in your browser.

A free Python compiler with a real code editor, instant output, and clear error messages. This online Python compiler (interpreter) runs Python 3.14 locally — your code never leaves your device.

Start codingBrowse examples
  • Runs locally
  • No signup
  • NumPy, pandas, matplotlib

Online Python compiler

main.py· Python 3.14 in your browser
main.pyPython 3.14
Ready when you are.Press Ctrl + Enter or click Run. Python loads on the first run.Runs locally · nothing is uploaded.
Python idleLn 1, Col 1Spaces: 4UTF-8

Local execution — your code never leaves this browser.Python 3.14 via Pyodide

Example programs

Basics

Input

Loops

Functions

Data

Charts

Compiler settings

Applies to the code editor
Runaway loops are stopped automatically
Your current editor contents will be replaced

Built for learning

Small tool. Serious features.

Everything you need to write, run, and understand Python — without installing anything or creating an account.

Private by design

Python runs in a Web Worker on your device. There is no server execution, no account, and no code upload.

A real editor

CodeMirror with Python syntax highlighting, auto-indent, bracket matching, folding, search, and keyboard shortcuts.

Streaming output

Print output and tracebacks appear as they happen, with a Jump to line button and plain-English hints for common errors.

Standard input

Programs that call input() pause and wait for your answer in the Output panel, just like a terminal.

Data science ready

Import NumPy, pandas, and matplotlib. Packages download on demand and figures appear in the Plots tab.

Share and export

Copy a compressed link that contains your code, or download main.py to keep working locally.

Three steps

From idea to output in seconds.

The first run downloads the Python runtime. After that, everything is cached and starts almost instantly.

Open the compiler
  1. 01

    Write or paste code

    The editor opens with a starter program. Paste your own code, upload a .py file, or start from an example.

  2. 02

    Answer prompts as you go

    Programs that call input() pause in Output and wait for you to type an answer, just like a terminal.

  3. 03

    Run and inspect

    Press Run or Ctrl+Enter. Check output, jump to an error line, inspect variables, and view charts in Plots.

Learn by doing

Example programs, ready to run.

Short, readable programs with explanations. Open one in the compiler, change a value, and run it again.

Examples

About this tool

Everything about this online Python compiler.

How it works, who it is for, and what separates a great Python compiler online from the rest — explained without jargon.

Open the compiler

Questions

Online Python compiler questions, answered.

Still curious? Read the about page or the guides.

Is this Python compiler really free?

Yes. This free Python compiler has no accounts, and no premium tier. The site is a static page and the Python runtime is downloaded from a public CDN, so there is no per-run server cost.

No install · No signup · No ads

Your next Python program is one click away.

Open the compiler, press Run, and see what happens. That is the whole setup.

Run Python nowRead the guides