50+ formats. No uploads. No servers. Your files stay on your device.
Drop your 3D file here
or click to browse
FabRapid 3D is a free browser-based 3D model converter. It runs entirely in your browser using WebAssembly, which means your files are never uploaded to any server. Convert between 50+ formats including STEP, OBJ, FBX, STL, GLB, GLTF, USDZ, and many more.
Whether you're a game developer, industrial designer, architect, or 3D printing enthusiast, FabRapid 3D handles all your conversion needs. With support for over 1,000 format combinations, it's the most versatile 3D converter available — and it's completely free.
Drop any 3D file directly into the browser. No installation, no signup required.
Inspect your model with an interactive 3D viewer. Rotate, zoom, and verify before converting.
Choose from 50+ output formats and download your converted model instantly.
Your 3D models never leave your device. FabRapid 3D runs entirely in your browser using WebAssembly — no server uploads, no cloud processing, no tracking.
Read more about FabRapid 3D or get in touch at hello@fabrapid.com
FabRapid 3D uses WebAssembly (WASM) to run professional-grade C++ libraries like Assimp and OpenCascade directly in your browser. When you drop a file, it's processed entirely on your device — nothing is ever sent to a server.
Absolutely. Your files never leave your device. All processing happens locally in your browser using WebAssembly. We don't upload, store, or have access to any of your files.
FabRapid 3D is free because we believe essential tools should be accessible to everyone. There are no ads and no hidden costs. We plan to offer premium features in the future.
Any modern browser with WebAssembly support works. Chrome, Firefox, Safari, and Edge all support WASM. For large files (>50MB), we recommend at least 8GB of RAM.
We support 44+ input formats including STEP, IGES, OBJ, FBX, STL, GLB, glTF, USDZ, 3DS, DAE, PLY, 3MF, VOX, VTK, PCD, and many more. Output formats include GLB, glTF, OBJ, STL, PLY, and USDZ.