Convert STP to GLB
Convert a STP file to GLB in your browser. Free, no upload, no sign-up.
Convert STP files to GLB directly in your browser. The converter reads the exact STP geometry with the OpenCascade CAD kernel running in WebAssembly, tessellates it at the quality you choose and writes a GLB file. Nothing is uploaded, there is no file size limit beyond your computer's memory, and the result downloads instantly. GLB is the format web browsers, AR viewers and e-commerce platforms expect; one self-contained file with materials included.
How to convert STP to GLB
- 1Drop your STP file
Drag a .stp file onto the box above or click to choose one. Tessellated in the browser with OpenCascade. Mesh density is adjustable; the first load downloads a 7 MB engine.
- 2Pick the mesh quality
Fine gives smoother curves and a larger file, coarse keeps large assemblies light. The default suits most 3D printing jobs.
- 3Check the preview
The model renders in 3D so you can confirm it loaded correctly. Dimensions, volume and triangle count are shown next to it; open edges are flagged if the mesh is not watertight.
- 4Download the GLB
Adjust the export options if needed and click download. Meshes without materials get a neutral gray PBR material so the file renders correctly in viewers.
What is a STP file?
.stp is simply the three-letter extension for a STEP file (ISO 10303-21). SolidWorks, Inventor and many Windows CAD tools default to .stp while others use .step; the content is identical. It stores exact B-rep solids with units, not triangles.
Commonly used by: SolidWorks, Inventor, Creo, NX, supplier CAD downloads
Tessellated in the browser with OpenCascade. Mesh density is adjustable; the first load downloads a 7 MB engine.
What is a GLB file?
GLB is the binary container for glTF 2.0, the "JPEG of 3D" maintained by the Khronos Group. A single .glb file bundles geometry, PBR materials, textures and animations, and is the standard format for 3D on the web and in AR viewers.
Commonly used by: web viewers (three.js, model-viewer), AR on iOS and Android, Sketchfab, game engines
GLB is the format web browsers, AR viewers and e-commerce platforms expect; one self-contained file with materials included.
STP vs GLB
| STP | GLB | |
|---|---|---|
| Full name | STEP file (.stp extension) | Binary glTF |
| Encoding | Text | Binary |
| Geometry type | Exact (B-rep / curves) | Triangle mesh |
| Colors | Yes | Yes |
| Textures | No | Yes |
| Materials | No | Yes |
| Stores units | Yes | Yes |
| Multiple objects | Yes | Yes |
| Typical use | SolidWorks, Inventor, Creo | web viewers (three.js, model-viewer), AR on iOS and Android, Sketchfab |