Extract text from UKX files
To convert your UKX file to another format, you need Unreal Engine or other Game software.
To convert other file formats to the "Animation Package" file type, you need software like Unreal Engine or a similar tool.
The .UKX format is a legacy container used primarily by Unreal Engine 2 and Unreal Engine 3 to store skeletal animation data. These packages function as libraries containing 3D character models, bone structures, and motion sequences for classic games like Lineage II, Killing Floor, and Unreal Tournament 2004.
Because this is a proprietary, version-specific binary format, .UKX files are notorious for their lack of interoperability. You cannot simply drag a .UKX file into modern 3D software like Blender or Autodesk Maya; doing so usually results in unrecognized file errors. Furthermore, game-specific encryption (common in MMOs like Lineage II) often prevents even the standard Unreal Editor from opening them.
For modders and archivists, the only practical workflow is conversion. To edit these assets, you must extract the contents into intermediate formats - typically PSK (Actor X Mesh) for the skeleton and PSA (Actor X Animation) for the movement data - or directly to FBX for use in modern engines like Unreal Engine 5. While rare, some .UKX files may alternatively be archives created by Kingsoft Office, though this usage is largely obsolete.
Convert.Guru analyzes your UKX file, detects the exact format, and lets you read the text inside.
Users also converted UTX, VMD, COPY, USX and PCC files.
If you want to convert UKX file to EXE, ISO, BIN, CUE, PAK, WAD, PK3, PK4, BSP, MAP, SAV or DAT, you can use Unreal Engine or similar software from the "Game Animation Storage" category. In the File menu, look for Save As… or Export….
To convert MOD, BIN, CFG, SCX, DAT, MPQ, LOG, CUE, INI, EXE, SCM or ISO files to UKX, try Unreal Engine or another comparable tool in the "Game Animation Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our UKX converter.