DOS Emulator OnlineFreeDOS at the C:\> prompt, in your browser.

Write batch files, try the EDIT text editor and the DEBUG assembler, or play nine free DOS games — on an emulated PC that boots in a few seconds.
Bring your own DOS programs and files: they appear on drive B:.

Boots in 3 secondsNine free gamesYour files on B:

No sign-up Nothing to install Free software only

Loading the emulator…

The PC runs in this tab. Files you add stay on your device.

THREE SIMPLE STEPS

How to use the DOS Emulator

Start FreeDOS

Press Start FreeDOS. It downloads about 3 MB once, then boots to the C:\> prompt.

Type DOS commands

Click the screen and type DIR, EDIT, MEM or a game name such as TETRIS. The key row has Esc, arrows and F-keys for phones.

Use your own files

Add files in the Files panel: they appear on drive B:. Download files that programs save there, and save the state to continue later.

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Pay as you go

$1 in free credits for eligible new accounts. No card needed. Generators have separate account and credit requirements. The PC emulator is free.

DOS Emulator FAQ

Can I run DOS in my browser for free?

Yes. This free online DOS emulator boots FreeDOS 1.4, a free DOS that runs most programs written for MS-DOS, to the C:\> prompt in a few seconds, with nothing to install.

Can I run my own DOS programs?

Yes: add the program's files in the Files panel and run them from drive B: (a 1.44 MB floppy). Files your programs save there can be downloaded again.

Which games are included?

Free and open-source games packaged with FreeDOS: vitetris, BlockDrop, Floppy Bird, sudoku86, zmiy, Smiley, Hangman, Senet and Eliza.

Is anything uploaded?

No. The PC runs in your browser tab; your files are copied onto its virtual floppy on your device.

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