Opening an III File

The III file type is primarily associated with Trainz Simulator.

III	File extension: III
	File type:	3D model file

What is an III file?

III files mostly belong to Trainz Simulator. These III files are used in two main ways. They are often a Trainz model file for 3D train simulations and sometimes an Allplan project file for CAD drawings.

Trainz Simulator Use: The file stores 3D model data such as geometry, textures, and other simulation details. For more info, visit Trainz Portal.

Allplan / IronCAD Use: The file holds project data used in building or design applications. Learn more at Allplan.

FilExt.com tip: Always open these files with the specific software version that created them to ensure correct display and editing.

How to open III files

You need a suitable software like Trainz Simulator to open an III file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your III file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a III file directly in the browser:. Just drag the file onto this browser window and drop it.

Online III Text Viewer

Choose your .iii file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert III files:

Trainz Simulator
See the previous paragraphs to learn more about the main application. III files are often referred to as Trainz Simulator 3d images because this type of file is primarily created or used by this software.
ARC+ (Drawing) by ACA
Arc+ is a professional architectural program for drawing buildings. One of two files necessary for a drawing. The other will have the same root name and the extension .DDD.
Intel IPhone Compatible File by Intel
Intel video phone with ProShare technology. The Mime types used with this association are: application/x-iphone.
Know Your Stuff (Home Inventory File) by Insurance Information Institute
Free software from the Insurance Information Institute for creating a home inventory with pictures and descriptions. There is an option to store the file on-line in a secure vault for a nominal fee. Or, just keep the file on a USB drive and secure it somewhere. This file format is classified as Database.

Technical Data for III File Extension

File classification:

3D Image

Related files:

skp, lll, czd, dch, cdw, obj, 3ds, fbx, dwg, dxf, stl

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: iiifile, FileType: Intel IPhone Compatible, AppName: Conferencing Utility Dll
EXEFile: msconf.dll

ProgramID: iiifile, FileType: Intel IPhone Compatible, AppName: Intel® Video Phone Container

ProgramID: iiifile
EXEFile: %ProgramFiles%\Intel\Createshare\VideoPhone\VP50.exe %1

ProgramID: iiifile
EXEFile: %ProgramFiles%\Intel\CREATE~1\VIDEOP~1\vpstart.exe %1

ProgramID: iiifile
EXEFile: rundll32.exe msconf.dll,NewMediaPhone %l

ProgramID: iiifile
EXEFile: %SystemRoot%\SYSTEM32\rundll32.exe %1

ProgramID: iiifile
EXEFile: rundll32.exe %SystemRoot%\ServicePackFiles\i386\msconf.dll,NewMediaPhone %l

ProgramID: iii-HomeInventory
EXEFile: %ProgramFiles%\Insurance Information Institute\HomeInventory\HomeInventory.exe %1

ProgramID: iiifile
EXEFile: rundll32.exe msconf.dll,NewMediaPhone

Show all 9 listings To Top

an iii 3D model file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with III files

Associate the III file extension with the correct application.
Update your software that should actually open 3d model files. Because only the current version supports the latest III file format. Search, therefore, e.g. on the manufacturer website after an available Trainz Simulator update.
To make sure that your III file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .III file online - secure, fast, and no downloads needed.