STEP to OBJ Converter
Convert STEP to OBJ free in your browser. Files never leave your device.
Drop files anywhere on this pageTap to choose a file
Mix any types. We detect each one and pick its best format.Photos, Files or iCloud • up to 100 MB
Up to 100 MB per file • Multiple files at once • Ctrl+V works too
How to convert STEP to OBJ
Add your STEP (.step) file
Drag and drop your .step file into the converter box above or click Choose files. You can also paste screenshots or clipboard data with Ctrl+V.
Convert to OBJ (.obj)
Our in-browser engine processes your .step file directly in memory. No files are uploaded to any server, guaranteeing 100% private conversion.
Download your fresh .obj
Click Download to save your newly converted .obj file to your device. There are zero watermarks, zero size traps, and no waiting room.
What are STEP and OBJ files?
What is a STEP file?
.stepISO standard industrial 3D CAD solid model. STEP files are widely utilized across desktop applications and digital workflows, but may require conversion when sharing with recipients who lack native viewing software.
What is a OBJ file?
.objWavefront universal 3D polygonal geometry format. Converting to OBJ format ensures universal compatibility across modern browsers, mobile devices, and third-party software suites.
STEP to OBJ conversion settings explained
When converting STEP to OBJ, precision matters for slicing and 3D printing:
- Linear Deflection (Chordal Deviation): Controls how closely triangular facets follow curved surfaces (0.01 mm for precision parts, 0.1 mm for rapid prototyping).
- Angular Deflection: Determines the angle between adjacent facet normals along curved fillets, ensuring smooth circular silhouettes without polygon stepping.
- Manifold & Watertight Validation: Verifies that meshes have no open edges or non-manifold junctions before export into slicing software like Cura or PrusaSlicer.
Frequently asked questions about STEP to OBJ
Can I import the converted OBJ into Blender or Unreal Engine?
Yes. The generated Wavefront OBJ file includes vertex coordinates and normal vectors that import directly into Blender, 3ds Max, Maya, Unity, and Unreal Engine.
Are STEP assemblies preserved in OBJ format?
Yes. Assembly components are tessellated into distinct geometric object groups within the exported OBJ structure.
Is conversion from STEP to OBJ free?
Yes, 100% free with zero watermarks and no account registration.
Are my proprietary CAD files uploaded anywhere?
No. The conversion runs in-browser via OpenCASCADE WebAssembly. Files never leave your device.