Files with a18 extension are used for ARJ software. It is an archive file format.

Detailed description

Software that open a18 file

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A18 file extension - Split Multi-volume ARJ compressed file archive (part 20)

What is a18 file? How to open a18 files?

File type specification:

Archive and compressed file type icon Archive and compressed file type

a18 file icon: a18 filetype icon

The a18 file extension is associated with ARJ. Its one part of a multi-volume compressed ARJ archive.

ARJ is the native format of ARJ archiver. ARJ is a file archiver that compresses files into a disk space saving archive. It is fast, reliable, and has a rich set of features which include Windows 9x, Millenium long filename support, file version management, data damage protection, ANSI escape sequence display handler, configurable command options, multiple volume archives (archives that span diskettes) and much more.

Some ARJ files can be parts of a multi-volume sequences. In ARJ you can split a huge archive to a few smaller files, which are called volumes.

ARJ archiver does use the following sequence:

  • .arj for first volume
  • .a00, a01, a02 .... etc. for any additional volumes


In order to unpack the multi-volume ARJ archive, you need to place ALL of the split parts in the same directory and start extraction of the first volume (.arj). The program will automatically use all of the parts to extract the content of the archive.

 

The default software associated to open a18 file:

ARJ32 icon

ARJ Software, Inc. logoARJ32  Microsoft Windows software

Company or developer:
ARJ Software, Inc.

ARJ32 is Windows 32 command line version of original ARJ archiver. It is full compatible with ARJ for MS-DOS as well as support all file system features of Windows operating system.

ARJ icon

ARJ Software, Inc. logoARJ  Microsoft MS-DOS software

Company or developer:
ARJ Software, Inc.

ARJ is popular file archiver for MS-DOS operating system used to compress data and save disk space. It runs on most PCs from the IBM PC XT to Pentium IIIs and is compatible from version 1.0 to present.

Help how to open:

The a18 (e.g. Avatar.a18 file) file is only one part of ARJ multi-volume archive. If you want to extract this file, you must have all parts of the ARJ multi-volume archive. Open the first part of ARJ (e.g Avatar.arj file) multi-volume archive in ARJ application and extract files from ARJ multi-volume archive.

How to convert:

It is not possible to convert only one part of ARJ multi-volume archive. Only complete ARJ archive can be converted in to another archive or compression format. The easiest way how to convert complete ARJ multi-volume archive is to decompress the ARJ archive with the use of ARJ or any other supported archiver and repack the content with another compression or archive application of your choice.

Related links:

ARJ official website

ARJ open project website

List of software applications associated to the .a18 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open a18 file, edit a18 file, convert a18 file, view a18 file, play a18 file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting a18 files.

Software that open a18 file - Split Multi-volume ARJ compressed file archive (part 20)

Programs supporting the exension a18 on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open a18 file action.

Microsoft Windows:

Main software associated with a18 file by default:
ARJ32 small icon ARJ32
Other suggested software:
WinRAR small icon WinRAR
WinZip small icon WinZip
7-zip small icon 7-zip
ZipZag small icon ZipZag

Microsoft MS-DOS:

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