Click the "Select File" button above, and choose your K file.
You’ll see a preview, if available.
Click the "Convert file to..." button to extract text information.
Convert K to another file type
To convert K Data files to another format, you need Ansys LS-DYNA or other Data software.
Convert a file to K
To convert other file formats to the "Simulation Input & Asset Bundle" file type, you need software like Ansys LS-DYNA or a similar tool.
About K files
A .k file typically serves one of two distinct purposes. In engineering and simulation, it acts as an Ansys LS-DYNA keyword input file, storing finite element models, nodes, materials, and constraints in a structured text format (often called an input deck). These files are used for advanced crash simulations and structural analysis. Conversely, in game development, a .k file can be a UnityFS asset bundle, acting as a compressed container for 3D models, textures, and scripts within the Unity game engine. The primary disadvantage of these formats is their highly specialized nature. LS-DYNA input files are massive text files that often exceed 100MB, requiring proprietary, expensive software like Ansys Workbench to visualize the mesh accurately. Unity .k files are compiled, proprietary binary blobs that are notoriously difficult to open without specific reverse-engineering tools. For simulation professionals, converting an LS-DYNA .K file to CSV or JSON makes node data easily readable. You might also export the mesh to formats like NAS (Nastran) or INP (Abaqus) for cross-platform simulation. For gamers or developers dealing with a Unity .k file, you will want to extract its contents. Converting or extracting these bundles into standard formats like OBJ (for 3D models), PNG (for textures), or WAV (for audio) is essential for editing.
Convert.Guru analyzes your K file, detects the exact format, and lets you read the text inside.
If you want to convert K file to C, F, R, MB, OBJ, FBX, DAE, 3DS, MAX, BLEND, MA or C4D, you can use Ansys LS-DYNA or similar software from the "Simulation Input & Game Assets" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to K, try Ansys LS-DYNA or another comparable tool in the "Simulation Input & Game Assets" category.
The K Converter Story
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 K converter.