Open DAT File


How to open DAT Files in Windows

.DAT is a data file extension. Its content is text or binary data.  It is usually created by a program and you can also view the dat file from the proprietary software. However, there are many file types that we will see below.

Mime type:

  • application/octet-stream
  • zz-application/zz-winassoc-dat


An example of a .dat file:


Steps for Windows 

  1. Locate the dat file in your computer or mobile device.
  2. Double click on it.
  3. Select a program in the open with dialog. You should select the proprietary software that created it.
  4. Confirm
  5. View it and edit it.
  6. If you don’t have the program installed you have to download it and install it.
  7. There are not generic dat viewers, readers or editors. However you can try with a generic text editor like notepad. If you don’t know which is the propetary software a text editor will be the best option to edit and view dat files

To learn more about all the dat file types and how to view them keep reading.



File Extension .DAT

.dat file extension is used by following type(s):

  type 1 description:
Data file – common and mostly used .dat type
It is traditionally used by many various applications or programs for their data or resource files.
Related programs
that open dat files:


type 2 description:
Video CD MPEG movie MPEG1 – common and mostly used .dat type
Video CD MPEG movie MPEG1. Extension used for some MPEG files.
Related programs
that open dat file:
  • Need4 Video Converter,
  • Xilisoft DVD Creator,
  • Wondershare DVD Creator for Mac, Wondershare Video Converter for Mac, PowerDVD,
  • Nero Multimedia Suite


type 3 description:
Act of War game file
Package contains game data (music, textures, sounds, models, maps).
Related programs
that open it:
Dragon UnPACKer, Act of War


 type 4 description:
Antivirus data
Used by many antivirus applications for virus descriptions and information (update files).
Related software to view: AVG Antivirus, BitDefender


type 5 description:
AOL Messenger (AIM) BFTS database 
Used by AOL (AIM) Instant Messenger 6 for database .
Related software to view: AOL Messenger (AIM)


type 6 description:
Apple Safari dictionary 
Dictionary file used by Safari.
Related software: Safari


type 7 description:
Clarion DOS database
Database file used by Clarion.
Related software: Clarion


type 8 description:
Corel WordPerfect merge data 
It is associated with Corel WordPerfect, a word processing program, developed by Corel Corporation. Corel Word Perfect is part of Corel Word Perfect Office suite.

The .dat files are used to store merge data.

Related programs:
  • Corel WordPerfect,
  • Corel WordPerfect Office


type 9 description:
LabVIEW binary datalog
Binary datalog used by LabVIEW.
Related software: LabVIEW


type 10 description:
LEGO Star Wars game archive
Archive contains LEGO Star Wars files (maps, objects, sprites, sounds).
Related software: Dragon UnPACKer, LEGO Star Wars


type 11 description:
MapInfo native format
Native map data format used by MapInfo.
Related software: MapInfo


type 12 description:
Microsoft Internet Explorer cache
It is used by Microsoft Internet Explorer. Cache file.
Each time you open a Web page, your browser creates a cache file (a temporary copy) of the page’s text and graphics. When you open the page again, for example, when you click on the toolbar Back button, your browser checks the Web site server for changes to the page.
If the page has changed, your browser retrieves a new version over the network.
If the page hasn’t changed, your browser uses the cache files from your RAM or hard drive to display the page.
For example, Internet Explorer caches Web pages to both memory (RAM) and disk (hard drive) until the respective cache is full.
Internet Explorer then rotates out pages based on age. Internet Explorer designed this system to help load Web pages quicker.
But, if you’ve viewed lots of Web pages, you may have an overloaded hard disk cache. Internet Explorer will have to check before it loads a new page.
Over time your browser’s cache grows. A cache full of outdated information is worse than no cache at all. It causes problems with Java applets. Also, it causes you to see out of date text or images. And makes your browser sluggish starting and exiting. The solution is to clear out the cache.
Related programs
that open data file:
Internet Explorer


type 13 description:
Microsoft Word for DOS data 
It is associated with Microsoft Word, worldwide most popular and powerful tool for writing documents.

The .dat files were used in Microsoft Word for DOS for some kind of data files.

Programs: Microsoft Word


type 14 description:
Mozilla Firefox plug-in register 
It is used by Firefox.
Programs: Firefox


type 15 description:
Nero BackItUp drive image
Suffix for Nero BackItUp drive image. Nero BackItUp automatically backs up your files quickly and easily to your choice of storage media, and creates bootable discs to restore your system if the worst happens.

It includes full support for Windows Vista® virtual folders and built-in SecurDisc data protection features.

Programs: Nero BackItUp


type 16 description:
Skype local store 
dat file used by Skype for local store file.
Software: Skype


type 17 description:
Sony Digital Audio Tape
Digital Audio Tape (DAT or R-DAT) is a signal recording and playback medium developed by Sony in the mid 1980s. In appearance it is like a compact audio cassette. It uses 4 mm magnetic tape enclosed in a protective shell. But is roughly half the size at 73 mm × 54 mm × 10.5 mm.
As the name suggests, the recording is digital rather than analog. DAT has the ability to record at higher, equal or lower sampling rates than a CD. (48, 44.1 or 32 kHz sampling rate ) at 16 bits quantization.
If a digital source is copied then the DAT will produce an exact clone. In other digital media such as Digital Compact Cassette or non-Hi-MD MiniDisc, both use lossy data compression.


type 18 description:
SPOT graphic 
A system for implementing an unobtrusive, always-on-top interface-to-interfaces comprises a spot interface that is small that it may lie over any open window such that it is always on top thereby enabling a user to access any available window without first having to return to a main window or close other open windows.
The spot interface comprises an active region represented by a small graphical display element (GDE). It has the appearance of a sphere, which unless disabled by a user, is always visible regardless of which is the topmost window.
When a mouse pointer is moved into the spot GDE, a ring or collar having four radial quadrants representing menu items is displayed after waiting a user specified length of time.
These radial menu items are displayed around the GDE. When the mouse pointer is moved into any of the four quadrants of the collar, a secondary rectangular interface associated with the quadrant is displayed after waiting a user specified length of time.
The secondary interface may be locked opened such that it will not close when the mouse pointer is moved out of area defined by the interface. Periodic animation of the spot GDE may be provided.
Software: XnView


type 19 description:
SPOT image format
 used by SPOT.
Software: SPOT images, XnView


type 20 description:
TomTom traffic data
dat file Traffic information used by TomTom applications, GPS navigations.
Related programs: TomTom Navigator


type 21 description:
Trillian wiki 
It is used by Trillian.
Program: Trllian


type 22 description:
Unfinished FastTrack download
Unfinished download used by FastTrack clients, applications.
Related programs
that open dat:


type 23 description:
Windows registry hive
On-disk format for the Windows registry.
Related programs
that open it:
Microsoft Windows 7, 10, Vista, XP


type 24 description:
Yahoo! Instant Messenger settings file
used by Yahoo! Instant Messenger, contains settings.
Related programs
that open dat file:
Yahoo! Instant Messenger

That is how you view dat files.