Write, run and debug R code directly in your browser. Powered by WebAssembly — no downloads, no setup, instant execution with full syntax highlighting and real-time error detection.
R is a powerful open-source programming language and statistical computing environment widely used by data scientists, researchers, and analysts worldwide. An online R editor and compiler eliminates the need to install R or RStudio locally — you simply open your browser, write code, and execute it instantly.
Our R code compiler uses WebR, a port of the official R engine compiled to WebAssembly, ensuring your code runs with full R compatibility directly in the browser. This means you get access to base R functions, statistical packages, and real-time output — all without any server-side execution.
Best practices when using an R interpreter online include: keeping scripts modular, using meaningful variable names, commenting complex logic, and testing small chunks before running large datasets. Common R examples include computing descriptive statistics using mean(), sd(), and summary(), creating visualisations with plot(), or manipulating data frames with subsetting and apply() family functions.
Whether you are a student learning R for the first time, a developer testing snippets, or a professional running quick analyses, our free R compiler online is built for speed, accuracy, and ease of use — with syntax highlighting, real-time error feedback, and one-click code examples to get you started immediately.
A full-featured R development environment — right in your browser, zero configuration.
Run R scripts in milliseconds using WebAssembly. No server delays, no queue — pure client-side R execution.
Full R syntax highlighting powered by CodeMirror 5 with bracket matching, code folding, and auto-indentation.
Live validation catches common R errors as you type — unmatched parentheses, empty scripts, and known pitfalls.
Load ready-to-run R examples instantly — from basic statistics and vectors to loops, functions, and data frames.
Save your R script as a .R file with one click, or copy it to clipboard to paste into RStudio or any IDE.
Fully responsive layout — write and run R code on your phone or tablet with no horizontal scrolling.
Choose from Dracula, Monokai, Material or Default editor themes for comfortable long-session coding.
Your R code never leaves your device. All execution happens locally in the browser — no data is sent to any server.
From zero to executing R scripts in under a minute — no installation required.
The R editor loads instantly. WebR initialises in the background — no signup, no install, no wait.
Type your R code directly, paste from clipboard, or click an example chip to load a ready-made script.
Hit the green Run Code button or press Ctrl+Enter. Your R code executes instantly.
Output, printed values, errors and warnings appear in the console pane with colour-coded formatting.
.R file, or use the ⎘ Copy button to copy all code to your clipboard for use in RStudio or any other IDE.
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