What Is a DMA File?

How to Open, Edit, & Convert DMA Files

Screenshot of several DMA files in Windows 10
DMA Files.

A file with the DMA file extension is most likely a DOORS Template file created with IBM Rational DOORS.

However, not all DMA files are template files. Your specific DMA file might instead be a DMOD Audio file.

Note: DMA also stands for Direct Memory Access, which is the name given to the process of data skipping the CPU and transferring directly out of RAM to a peripheral device. Direct Memory Access has nothing to do with files that end in the DMA extension.

How to Open a DMA File

DMA files that are DOORS Template files can be opened with IBM Rational DOORS. DMA files that were created in an older version of the software should be able to open in newer versions through the File > Restore > Module menu.

You can play a DMOD Audio file using UltraPlayer. The VLC program supports a lot of audio and video formats, so you might try opening the file with that application if UltraPlayer doesn't work. Other free audio players or editors may be able to open these types of DMA files too, so if you have another audio player on your computer you might want to try it as well.

Note: VLC doesn't associate itself with DMA files, so you can't just double-click the file and expect VLC to start using it. Instead, you'll need to open VLC and use its Media > Open File... option to browse for the file. Just be sure to select the "All Files" option while browsing for it so that VLC can find the .DMA file.

Tip: Still can't open your DMA file? Try opening it with a free text editor. If the file is composed entirely of normal-looking text, then your DMA file is just a text file. Otherwise, see if you can find some text somewhere within the file that could help identify the format it's in or what program was used to create it.

If you find that an application on your PC does try to open the DMA file but it's the wrong application or if you would rather have another installed program open DMA files, see our How to Change the Default Program for a Specific File Extension guide for making that change in Windows.

How to Convert a DMA File

IBM Rational DOORS can export a DMA file to a different format that can then be used in other programs like DoorScope.

Most audio files can be converted to a new format with a free audio converter, but I don't know of any that support the DMA format. You might be able to open the DMA file with VLC and then use the Media > Convert / Save... menu option to convert it to a more popular format.

Another "conversion" option that isn't technically converting, is to just rename the .DMA file extension to something else like .MP3. It's possible that this file is actually in the MP3 format but is just renamed with the DMA suffix.

Still Can't Open Your File?

If your DMA file isn't opening with any of these programs, you might want to check that you're reading the file extension correctly. It's possible that you don't really have a DMA file but instead a file whose extension just looks like it says "DMA."

DMDMC, and DMG are a few examples of files that use very similar-sounding extensions, but each opens with different software. DAM is another that shares all three of the same letters as DMA files but is in an entirely different format; it could be a DeltaMaster Analysis Model file that opens with DeltaMaster or a DAME Project file.

If you find that you don't really have a DMA file, research the real file extension to see if you can find a program or website that can open or convert the file.

However, if you do indeed have a DMA file but it's not working like it should, see Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more. Let me know what kinds of problems you're having with opening or using the DMA file and I'll see what I can do to help.