TypeScript Online Compiler

Write, compile, and run TypeScript code online for free. Use custom standard input and view program output without installing the TypeScript compiler and Node.js.

Run the program
Output
Run TypeScript Code Online
This free TypeScript online compiler runs a single source file named main.ts in an isolated execution environment. Edit the starter program, provide optional input, and select Run to see standard output and compiler errors.
How to Use the TypeScript Compiler
  1. Write or paste a complete TypeScript program in the code editor.
  2. Add input in the Input tab when the program reads from standard input.
  3. Select Run. Compilation errors, runtime errors, and program output appear in the Output panel.
TypeScript Execution Notes
TypeScript is first checked and compiled to JavaScript, then executed with Node.js. Type errors are displayed in the output panel.
Programs can read values using process.stdin. Execution time, memory, processes, output size, and network access are limited to keep the shared compiler responsive and secure.
Frequently Asked Questions
Do I need to install TypeScript?
No. Compilation and execution happen remotely, so the editor works from a modern browser on desktop or mobile.
Can I provide input to my program?
Yes. Enter one or more lines in the Input tab before selecting Run. The text is passed to the program through standard input.
Continue learning with the TypeScript tutorials and examples.