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Run code in 11 languages, right in your browser

A free online compiler with an editor, an input box and live output. Nothing to install.

Pick a language and run

Each compiler opens with a starter program, ready to run.

Everything you need to practise

One screen for writing, running and fixing your code.

Real code editor

Syntax highlighting, line numbers and auto-indent, in a dark or light theme.

The ScholarHat Java compiler with a program in the editor, input values on the right and the program output below them

Made for your phone too

A compact toolbar with Run, Download, Copy and Reset keeps small screens usable.

The compiler on a phone, with the toolbar, code, input and output stacked

Input box for your program

Programs that read from the keyboard get their values from the input panel.

Output as it happens

Results and compile errors show in the output panel. Clear it with one tap.

Download, copy or reset

Save the file, copy the code, or go back to the starter program in one tap.

Start from a working program

Pick a language to see the starter code. Open it in the editor and change anything.

name = input("Your name: ")
print(f"Hello {name}, welcome to ScholarHat!")

Common questions

Is the ScholarHat compiler free?

Yes. Open any language and start coding. There is nothing to install.

Can I give input to my program?

Yes. Type the values into the input panel, then run. Your program reads them as if they came from the keyboard.

Which languages can I run?

C, C++, C#, Java, Kotlin, Python, JavaScript, TypeScript, HTML, React and Angular.

Can I keep my code?

Yes. Download the file to your device, or copy it to your own editor.

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