A daily updated filename extension database!

AR3 file extension

The table below provides useful information about the .ar3 file extension. It answers questions such as:

  • What is the .ar3 file?
  • What program do I need to open a .ar3 file?
  • How can the .ar3 file be opened, edited or printed?
  • How can I convert .ar3 files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

0 extension(s) and 1 alias(es) found in database

✅ MyDOS Ramdisk Image

AR0 file is a MyDOS Ramdisk Image. MYDOS is an alternative DOS for Atari 8-bit computers.
AR0 format description not yet available
Category: Data files
Application: MyDOS
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
AR0 aliases:
ar1, ar2, ar3, ar4, ar5, ar6, ar7, ar8, ar9
AR0 related links:
AR0 related extensions:

Other types of files may also use the .ar3 file extension.

🚫 The .ar3 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

a3r, arr, ar, ad3, zr3, are, af3

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Alan v3 Resource File
Sony RAW Image
3-bit ADPCM Compressed Audio
Sony ATRAC3 Compressed Audio
Micrografx ABC FlowCharter 3 Document
WRaptor Compressed Archive
Midtown Madness 2 Game Data
Infinity Engine Area Contents
Remedy ARS Report

🔴 Can't open a .ar3 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .ar3 file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .ar3 file extension, write to us!

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