What is a .DEM File And How To Open It – USGS (Simple Steps)

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While downloading files, you might have downloaded a file with the .dem extension. You most likely know what the file is, but you might be unsure on how to open it. That’s why we have made this article! You will learn how to open the .dem file extension on various systems, what it is and how to work with it.

What is a .DEM file?

The .DEM file extension comes from Digital Elevation Model. The development of this file was done by USGS. The file is a GIS software file.

What to know

There are currently 3 software that can open the .dem file on 1 platform.

How to open a .DEM file?

Below we will show you a step-by-step guide on how to open the .DEM file on various operating systems.

How to open a .DEM file on Windows (7, 8, 10)

Below you can see a visual guide on how to open the .dem file on Windows in 4 easy steps.

1. In the first step you need to download the MicroMouse AccuTrans 3D software. You will be using this software in order to open the file. You can also use Golden Software Voxler, TatukGIS Viewer and MicroMouse AccuTrans 3D software.

Step 2

Step 2: Locating your .DEM file

2. In the second step you need to locate the downloaded file. If you don’t remember where you have downloaded your file to, you should check your /download/ folder as it usually gets automatically saved there.

Step 3

Step 3: Choose “Open with”

3. In the third step right click on your file and choose “Open with”.

Step 4

Step 4: Choose the software and click ok

4. After choosing the “Open with” option, you will have an option to choose the MicroMouse AccuTrans 3D software you have downloaded. Click on the software and click “OK”. That’s all, now you have opened your file on Windows.

Still cannot open the .DEM file?

If you cannot open the .DEM file, it is entirely possible that you are trying to open the wrong file. The .DEM file extension is similar to other file extensions such as: .dem – Valve. You might be trying to open the wrong file, please recheck if you are trying to open the right file extension again.


In this article you have learned how to open the .DEM file with the MicroMouse AccuTrans 3D, Golden Software Voxler, TatukGIS Viewer programs on Windows.