LanguageA03
Split Multi-volume ARJ compressed file archive (part 5)
File type: Archive and compressed file
An a03 file extension is related to the ARJ compression file format. An a03 file contains split multi-volume ARJ compressed file archive (part 5).
Found 3 different file type records with the same a03 filename suffix.
What is a03 file?
File type category:
Archive and compressed file
Date updated: July 19, 2025
The a03 file extension is associated with ARJ. Its one part of a multi-volume compressed ARJ archive.
ARJ file extension is used for 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.
How to open a03 file?
The a03 (e.g. Avatar.a03 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 a03 file?
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.
Suggested software to open a03 file:
Associated software actions with the a03 file
Software applications that can open a03 files:
ARJ32 (Microsoft Windows)
WinRAR (Microsoft Windows)
WinZip (Microsoft Windows)
7-zip (Microsoft Windows)
ZipZag (Microsoft Windows)
ARJ (Microsoft MS-DOS)
Software apps that create a03 files:
ARJ32 (Microsoft Windows)
ARJ (Microsoft MS-DOS)
Software apps that extract a03 files:
ARJ32 (Microsoft Windows)
WinRAR (Microsoft Windows)
WinZip (Microsoft Windows)
7-zip (Microsoft Windows)
ZipZag (Microsoft Windows)
ARJ (Microsoft MS-DOS)
Split Multi-volume ALZip compressed file archive (part 5)
File type category:
Archive and compressed file
Date updated: August 7, 2019
The a03 file extension is associated with the ALZip a compression tool for Microsoft Windows operating system that supports about 40 compression file formats.
It is one part of a multi-volume compressed ALZ archive.
How to open a03 file?
Use compatible tools to work with *.a03 files.
Suggested software to open a03 file:
Associated software actions with the a03 file
Software applications that can open a03 files:
ALZip (Microsoft Windows)
Software apps that create a03 files:
ALZip (Microsoft Windows)
Software apps that extract a03 files:
ALZip (Microsoft Windows)
WOW! firmware module
File type category:
Various data file
Date updated: July 16, 2019
The a03 file extension is related to the WOW!, a software for Microsoft Windows operating system, which enables car mechanics to diagnose car faults.
The a03 file contains firmware module.
How to open a03 file?
Probably not meant to be accessed by the user.
How to convert a03 file?
Probably cannot be converted to anything else.
Suggested software to open a03 file:
Associated software actions with the a03 file
Software applications that handle other tasks involving a03 files:
WOW! (Microsoft Windows)