GLB to OBJ Converter

GLB packs a model, its materials and its textures into one file made for the web and real-time viewers. OBJ is an older and simpler mesh format that nearly every 3D program can import, including CAD tools and slicers that do not understand glTF. Converting GLB to OBJ is a quick way to move a model into software that does not support GLB, or to get a plain mesh you can edit, scale or repair.

The mesh geometry is converted. Textures, materials, colors, animations, rigs and cameras are not carried into the OBJ. If your GLB looks colorful in a viewer, expect a plain grey model after conversion, and keep the original GLB if you need to preserve the look. For modeling or 3D printing this is usually fine, because the shape is what matters.

If you only want to print the model, you can skip OBJ and choose STL as the output directly.

glTF is defined in meters with Y pointing up. The OBJ is written in millimeters by this tool, so a 0.1 unit model becomes 100 mm. Your 3D software may then interpret OBJ units differently: Blender, for example, may show it as a large object if its scene is set to meters. If the size is off, scale it in your software or change the "Units in the file" setting here and convert again.

Because OBJ is mostly used with Z-up in printing and CAD tools, the up-axis option rotates the model to match. Turn it off if your target software also uses Y-up and the model looks tilted.

GLB models from AI generators and online libraries often have many triangles and sometimes small gaps or floating pieces. They convert fine, but check the mesh before editing or printing. A .gltf file works only if everything is embedded in it; if it comes with a separate .bin, export a .glb from Blender or another tool first.