Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert your static OBJ 3D models into the versatile FBX format effortlessly. This tool is essential for 3D artists and game developers who need to transition from simple geometry to production-ready assets.
The OBJ format is a lightweight, geometry-only standard that stores vertices and faces but lacks advanced data. FBX, developed by Autodesk, is a robust container format that supports complex hierarchies, animations, and advanced textures. Converting OBJ to FBX transforms your static mesh into a format ready for professional game engines and animation software without corrupting the underlying structure.
The conversion process is lossless, meaning your 3D model retains 100% of its original geometric precision and mesh integrity.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Meshes and scenes for 3D printing, games, and CAD.
Common extensions: OBJ, STL, GLTF, GLB, FBX, PLY
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
