DMT File Type

- The quick facts

What are DMT files and how to open them

Are you having problems opening a DMT file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a DMT file?

DMT files have multiple uses, and DeLorme Street Atlas Map Transfer is one of them.

DeLorme Street Atlas Map Transfer

.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 This software is obsolete and DeLorme has been acquired by Garmin.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

Important: Different programs may use files with the DMT file extension for different purposes, so unless you are sure which format your DMT file is, you may need to try a few different programs.

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

Last updated: May 23, 2021

More file formats using the DMT extension

Through our research of DMT files, we know that the following formats exist. However, we have not yet analyzed them in detail, and we would love to hear from you if you have information about either of them.

PTC Creo appearance settings

Various apps that use files with this extension

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.