GLB to OBJ

Convert GLB to OBJ for older software

This page converts GLB to OBJ in your browser. Drop a .glb (or a .gltf with its files), check it in the preview, and download an OBJ. The model is converted on your device and never uploaded.

glTF has become the standard for the web, but plenty of software in daily use predates it. Older versions of modeling programs, some CAD and CAM packages, scientific and mesh-processing tools, and many in-house pipelines import OBJ and nothing newer. Converting GLB to OBJ is how you get a model from a web store, a scanning app or an AI generator into those programs.

How to convert GLB to OBJ

1. Drop the .glb file onto the converter. For a multi-file .gltf, drop the .gltf, .bin and images together.

2. Check the preview. If the model is animated, the OBJ is written in the rest pose stored in the file, which for a rigged character is usually a T-pose; the animation itself is not kept.

3. Click Convert. The .obj downloads straight away.

4. Look at the output size shown afterwards, which is often much larger than the GLB.

If the OBJ is headed for a slicer, skip a step and use GLB to STL.

Geometry only: what the OBJ contains

Be clear about this before you convert: the converter writes the shape of the model, not its look. There is no .mtl file and no texture images in the output.

Meshes

Kept, one OBJ group per mesh, so you can still select parts separately after importing.

Normals and UVs

Kept. Because UVs survive, the original textures will line up again if you reapply them by hand.

Materials and textures

Not written. The OBJ opens grey. The textures exist only inside the GLB.

Animation, skins, morph targets

Dropped. The model is exported in the rest pose stored in the file, which for a rigged character is usually a T-pose.

Compression

Draco- or Meshopt-compressed meshes are decoded, and OBJ is plain text, so the OBJ is often many times the size of the GLB.

If you need the textures too

Because UVs are kept, a textured OBJ is still within reach. Pull the images out of the GLB with a tool that can unpack glTF, or open the GLB in Blender, which imports glTF with its materials and can export OBJ with an .mtl and texture files. Then reassign the images in your target program.

Keep in mind that glTF materials are physically based: metallic, roughness, normal and occlusion maps. OBJ's .mtl format was designed for an older lighting model and has no proper place for most of those, so even a full material export loses some of the look. If the target program reads glTF or FBX at all, prefer that over OBJ when appearance matters.

Orientation and scale

GLB and OBJ are both Y-up by convention, so the converter has nothing to rotate and there is no up-axis checkbox here. If the OBJ arrives lying down in your program, that program expects Z-up; most importers have an axis option, or you can rotate the model after import.

Coordinates are copied unchanged. A GLB is in meters, so a 1.75-unit character becomes a 1.75-unit OBJ. Programs that assume meters will show it at the right size. CAD programs and slicers that assume millimeters will show it 1000 times too small; scale it there.