.AC File Info & Viewer

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Extension
.AC
Category
3D
Primary Use
3D Model Geometry File
Primary Software

Inivis AC3D

What is an .AC file?

An .AC file is most commonly a 3D model file created by Inivis AC3D. It stores 3D geometry, textures, and material properties. However, the .AC extension is also used for several other formats. It can be a GNU Autoconf configuration script, an Atomi Systems ActivePresenter project file, a GOM Inspect 3D measurement file, or a CaseWare Working Papers client file.

How to open .AC files?

Because .AC files have many possible formats, you need the right software for your specific file. You can use Inivis AC3D for 3D models, ActivePresenter for presentations, or a text editor for Autoconf scripts. If you are unsure about the origin of your file, viewer.online/ac analyzes .AC files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.

File conversion

If you need to change the format of an .AC file, we recommend file conversion to sensible target formats on convert.guru. For example, you can convert 3D .AC files to standard formats like .OBJ, .STL, or .FBX. Configuration scripts can be saved as standard .TXT files.

Summary

viewer.online/ac directly opens and previews .AC files in the browser, eliminating the need to install software or troubleshoot compatibility issues.

Frequently Asked Questions

Why can I not open my .AC file?

It might be associated with the wrong program. Because the .AC extension belongs to multiple different software applications, your computer might try to open it with the incorrect default program.

Is an .AC file a 3D model?

Yes, most often. The most popular use for the .AC extension is the 3D model format used by Inivis AC3D, though it can also be a script or project file.

How do I open an Autoconf .AC file?

Use a text editor. If your .AC file is a configuration script for GNU Autoconf, you can open it with any standard code editor like VS Code or Notepad++.

Can I convert an .AC file to .OBJ?

Yes. If your .AC file is a 3D model, you can use Inivis AC3D or an online conversion tool to export it as an .OBJ, .STL, or .FBX file.

What is an ActivePresenter .AC file?

It is a compressed project archive. Atomi Systems ActivePresenter uses the .AC extension for its project files, which are actually structured as .ZIP archives containing slides, audio, and presentation data.

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