Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .upk

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .upk file?
  • Which program can create the .upk file?
  • Where can you find a description of the .upk format?
  • What can convert .upk files to a different format?
  • Which MIME-type is associated with the .upk extension?
Unreal Engine 3 Package .upk file icon

Unreal Engine 3 Package

UPK file is an Unreal Engine 3 Package. The Unreal Engine 3 is a game engine developed by Epic Games.
Category: Game Data files
Application: Unreal Engine 3
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
Unreal Engine 3 Texture File Cache
Unreal Engine 3 Level Package
Unreal Engine 2 Skeletal Mesh
Unreal Engine 2 Animation Data
Unreal Engine 2 Runtime Executable File
Unreal Engine Data
Unreal Engine 3 Static Mesh Data

Other types of files may also use the .upk file extension. If you have helpful information about .upk extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

Tropico 3 Game Data
Zaurus Install Package
Dark Blood Online Game Data
Adobe Audition v3 Peak File
Pavuk Universal Command Data
English Language Info File
PhotoImpact Project
CYANA Upper Distance Limit File
PenMail Data

The .upk filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

ipk (1), upo (1), upl (1), puk (1), jpk (1), hpk (1), upm (1), upj (1), pk (1)

Can't open a .upk file?

If you want to open a .upk file on your computer, you just need to have the appropriate program installed. If the .upk association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.upk

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android