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Details of extension .dtn

On this page, we're going to take a closer look at the .dtn file extension, which is related to TunnelCAD Input/Output File. We'll explain what exactly a .dtn fileformat is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .dtn files into different formats, we'll give you some tips on how to do that too. Let's see the file format associated with this file extension!

Contents

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dtn file - TunnelCAD Input/Output File

TunnelCAD Input/Output File

The DTN file is a TunnelCAD Input/Output File. TunnelCAD is a volume calculations and tunnel section editing. It is developed and sold by IQsoft.
Category: Data files
Application: TunnelCAD
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Aliases:
-
Related extensions:
.xyh TunnelCAD Coordinate Data
Links:
-

The .dtn file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .dtn extension may contain various content types. If you have helpful information about this extension, write to us!

Could someone have spelled the .dtn file extension wrong?

In our database, we came across the following similar extensions:

.rtn MeasureMind 3D Data
.ctn CADTERNS Sloper
.ftn Fortran Source Code
.etn Telnet98 Session Data
.dtg Desktop Guitarist Music Score
.dt DrumStation Machine State Data

The .dtn extension is frequently misused

People sometimes confuse the .dtn filename extension. Based on the searches on our site, here are the most common misspellings from the past year.

ftn (1), ctn (1), etn (1), dyn (1), dtg (1), dt (1), dtj (1), dth (1), vtn (1), dn (1)

Having trouble opening a .dtn file?

If you want to open a .dtn file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .dtn association can trigger this error.

Windows can't open this file:

File: example.dtn

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android

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