.ACX File Info & Viewer

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Extension
.ACX
Category
Compressed
Primary Use
Data Backup Archive
Primary Software

AutoCount Accounting

What is an ACX file?

The .ACX file extension represents a data archive used by several different software programs. Most commonly, it is an accounting data backup file created by AutoCount Accounting software. It can also be a drive data archive used by Siemens SINAMICS DriveEditor, a game data file for titles like Kantai Collection or the FromSoftware Armored Core series, or an audiobook file format related to ACX. Historically, the .ACX extension was also used for an Atari ST Program created by Atari.

How to open ACX files?

Because an .ACX file can belong to many different programs, you need to know its origin. AutoCount backup files can be restored inside the AutoCount application. Drive data archives require Siemens SINAMICS DriveEditor. Some game data files use standard GZIP compression and can be extracted with archive tools like 7-Zip.

Inspect and view with viewer.online

viewer.online/acx analyzes .ACX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Since the .ACX extension has multiple possible meanings, we recommend using viewer.online/acx to identify the actual format of your file.

Summary

Because most .ACX files use the known ZIP format, viewer.online/acx can safely open and display them online, eliminating compatibility problems.

Frequently Asked Questions

What is an .ACX file?

An .ACX file is typically an accounting data backup file used by AutoCount Accounting, or a drive data archive for Siemens SINAMICS.

Can I open an .ACX file with standard ZIP software?

Yes, in many cases. Many .ACX files use standard ZIP or GZIP compression. You can often rename the extension to .zip or use tools like 7-Zip to extract the contents.

How do I know which program created my .ACX file?

You can inspect the file header. Use a tool like viewer.online/acx to analyze the .ACX file and identify its original software.

What is the Atari ST Program .ACX file?

It is an old executable file format. The .ACX extension was historically used for an Atari ST Program developed by Atari.

Why does my .ACX file not open in AutoCount?

It might be a different file type. The .ACX extension is shared by multiple programs, including Siemens software, audiobook platforms, and video games.

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