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UPK file extension

The table below provides useful information about the .upk file extension. It answers questions such as:

  • What is the .upk file?
  • What program do I need to open a .upk file?
  • How can the .upk file be opened, edited or printed?
  • How can I convert .upk files to another format?

Table of Contents

We hope you find this page helpful and a valuable resource!

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

✅ 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
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UPK aliases:
UPK related links:
UPK 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.

🚫 The .upk file extension is often given incorrectly!

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

hpk, ipk, jpk, pk, puk, uk, upj, upl, upm, upo

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

Pavuk Universal Command Data
Zaurus Install Package
iPack Configuration File
HPack Compressed Archive
DBase Compiled Update Data
Adobe Audition v3 Peak File
Tropico 3 Game Data
English Language Info File
Atari ST Compressed Dali Image
PhotoImpact Project

🔴 Can't open a .upk file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .upk file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .upk file extension, write to us!

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