Files with C03 extension might be found as one part of large split compressed ACE archive.

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Software that works with c03 file extension

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C03 file extension - Split Multi-volume ACE compressed file archive

What is c03 file? How to open c03 files?

File type specification:

Archive and compressed file type icon Archive and compressed file type

c03 file icon: c03 filetype icon

The C03 file extension is associated with WinACE. Its one part of a multi-volume compressed ACE archive.

ACE is the native format of WinACE archiver. In WinACE you can split a huge archive to a few smaller files, which are called volumes.

WinACE uses this split file sequence for multi-volume archives:

  • .ace or exe (SFX) for first volume
  • .c01, c02, c03 ....etc. for any additional volumes

The ACE file extension is used for the native format of WinACE archiver. WinAce is not just another archiving shell. With it's own powerful compression format ACE and built-in support for other popular compression types like ZIP, RAR and MS-CAB (to name a few), WinAce could actually become the only archiver you need.

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

The default software associated to c03 file type:

WinACE Archiver icon

WinACE Archiver  Microsoft Windows software

Company or developer:
  e-merge GmbH

WinACE is compression utility for Microsoft Windows. It is able to compress data in ACE, ZIP, LHA, MS-CAB, JAVA JAR file formats and decompress data from ACE, ZIP, LHA, MS-CAB, RAR, ARC, ARJ, GZip, TAR, ZOO, JAR archives.

Help how to open C03 files:

A *.c03 file is only one part of WinACE split compressed archive. If you want to extract this file, you must have all parts of the WinACE split compressed archive. Open the first part of WinACE (*.ace file) split compressed archive in WinACE application and extract files from WinACE split compressed archive.

How to convert file with extension C03:

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

Find conversions from c03 file:

c03 to 008

List of software applications associated to the .c03 file extension

Recommended software programs are sorted by OS platform (Windows, Mac OS X etc.) and possible program actions
that can be done with the file
: like open c03 file, edit c03 file, convert c03 file, view c03 file, play c03 file etc. (if exist software for corresponding action in's database).

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 of the c03 files.

  • Open c03 file
  • Create c03 file
  • Extract c03 file

Software that open c03 file - Split Multi-volume ACE compressed file archive

Click on the link to get more information about listed programs for open c03 file action.

Microsoft Windows:

Main software associated with c03 file by default:
WinACE Archiver small icon WinACE Archiver
Other suggested software:
WinRAR small icon WinRAR
7-zip small icon 7-zip

Apple macOS / Mac OS X:


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