The most common .dat files are video files from a video cd.
Try playing with media player.
See this also
http://filext.com/file-extension/dat
The .DAT file extension stands for DATA. DAT also refers to Digital Audio Tape, which is used sometimes for Backups.
DAT is a generic file extension (usually short for DATA). Its format and content are determined by the application that created the file. Without knowing what file created the DAT file, it would be very difficult to deterime how (or even if it was possible) to convert to XLS format. See related links for more information about the DAT file extension.
"Can be just about anything: text, graphic, or general binary data. There is no specific structure for a .DAT file. You can use an editor like EditPad Pro to look inside a .DAT file and possible determine its contents and relationship with a program." - from: "http://filext.com/file-extension/dat"
You may try forwarding a .dat file to a gmail account, google email account, and view the documents or sound files within gmail or download the file as a .doc /.mpeg or other standard extension. mchenry.knowbase@gmail.com
There's actually no such thing as a ".dat" file. The .dat extension is a generic one used for "data." It does not have any specific format and thus there is no tool that can open all, or even a majority, of these files.
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A .dat extension is general Data file which could contain anything pictures, videos or txt etc. The file may be renamed .dat at any point on its journey between the two computers as it will pass through several computer systems. If the recipient knows it is a .doc file they can just change the extension. Alternatively before sending the file right click on its icon and select Compress "File Name" from the menu that appears. This will create a .zip archive of the file which you can send and should arrive safely.
'dat' isn't common for extension for imagyes; but read/fread still usable
dat extension is a Video CD extension video which when copy into computer cannot be open by so many video editing software like premier pro,vegas, etc but the only way to do this is to convert the file with video converter programs into an AVI extension. AVI extension can be open in any video programs. so i recommend total video converter to do this. for more info mail chuksman2000@yahoo.com
What is the file extension What is the file extension
Dat file for nokia 2700
file extension for video is 101