File Extension Library


.DTN File Extension

  • Developer by: IQSoft
  • Category: 3d graphics, CAD-CAM-CAE Files

What are .DTN files and how to open them?

Can't open .DTN file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .DTN file.

What is a .DTN file extension?

.DTN file extension is created by IQSoft. .DTN has been classified as 3d graphics, CAD-CAM-CAE Files.

.DTN is TunnelCAD import or export data

The dtn file extension is associated with the TunnelCAD, a software for tunnel volume calculations and geometrical study, developed by IQSoft.

The dtn file contains imported or exported data from TunnelCAD.


How to open:

Use TunnelCAD to work with *.dtn files.

How to convert:

TunnelCAD may be able to export *.dtn files to other formats.

How to fix problems with .DTN files

  1. You need to update the application that you normally use to open .DTN files. Only the latest version of the software supports the current .DTN file format
  2. You need to check the .DTN file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)