DMT File - opening and understanding

Did your computer fail to open a DMT file? We explain what they are used for and recommend software that we know can open or otherwise handle your .DMT files.

What is a DMT file?

A .DMT file is a DeLorme Street Atlas Map Transfer file. .dmt files are files used in DeLorme Street Atlas Map, a navigation software used in travel and deliveries. The .dmt files contain data that users can transfer to another device, such as a computer using the DeLorme Street Atlas Map. This software is obsolete and DeLorme has been acquired by Garmin.

How to open DMT files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension DMT for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different DMT openers which you will find listed below.

Other file formats using extension .DMT

While DeLorme Street Atlas Map Transfer is a popular type of DMT-file, we know of 2 different uses of the .DMT extension.

The DMT file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a DMT opener may not be able to open all kinds of DMT files. In this case, look through both formats to make sure you find the best suited DMT viewer.

PTC Creo appearance settings

Through our analysis of DMT files, we know that one use of the format is PTC Creo appearance settings. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

While we have not verified the apps ourselves yet, our users have suggested 10 different DMT openers which you will find listed below.

Various viewers for this file format

These apps are known to open certain types of DMT files. Remember, different programs may use DMT files for different purposes, so you may need to try out a few of them to be able to open your specific file.

SA2011SA2011User submitted
SA2010SA2010User submitted
SA2009SA2009User submitted
Topo9Topo9User submitted
PRESEN MAGIC The PresenPRESEN MAGIC The PresenUser submitted
SA2008SA2008User submitted
Topo8Topo8User submitted
SA2013SA2013User submitted
SA2012SA2012User submitted
Topo10Topo10User submitted
We have not verified any software that we know for certain will work with DMT-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with DMT-files. If you know one, please use the 'Suggest a program' link below and tell us about it!