Free online X to OBJ converter

Older games and DirectX projects may provide a model in .x when an editor or asset pipeline accepts only OBJ. Converting it makes the mesh usable there, but OBJ does not retain the source model’s animation or rig.

What the X format is

.x is Microsoft DirectX’s legacy 3D model format, used by older games and graphics applications. It can contain mesh geometry, materials, texture coordinates, skinning, and animation; files may be text or binary.

What the OBJ format is

OBJ is a widely supported text format for static 3D geometry, including vertices, faces, normals, and texture coordinates. Materials are typically stored in a companion .mtl file, with image textures referenced separately. OBJ is useful for moving meshes between modeling, rendering, and fabrication software, but has no standard support for animation or rigging.

Online on 101convert.com

1. Open the converter on this page, upload the .x file, and check the per-file size limit shown on the page.
2. Set scale/units or rotate the model if needed.
3. Start the conversion and download the resulting .obj file. The conversion runs on the service’s server with Blender.

Offline with desktop software

Assimp is a free, open-source option with a command-line utility for Windows, macOS, and Linux. Install the utility and run:

assimp export input.x output.obj

Replace input.x with the source filename. Assimp selects the OBJ exporter from the output extension. Keep any generated .mtl file and referenced texture images alongside the OBJ so the destination software can find them.

Compatibility limits

The conversion produces static geometry: X-format animation, skinning, and rig data are not carried into OBJ. Materials may not map exactly, and texture images remain separate files. Check scale, orientation, normals, and texture paths in the destination software.