Convert STEP, IGES, STL — Simple and Powerful
Get started with 3D CAD Converter in minutes. Convert between 15+ formats with no CAD software required.
10 free conversions · No credit card · Windows 10/11
Download Free TrialFree trial: 10 conversions with every feature. No credit card required. Windows 10/11.
Three Steps to Convert Any 3D File
Download & Install
Download 3D CAD Converter and run the installer. Every feature is unlocked for your first 10 conversions, no credit card required.
Add Your Files
Drag and drop individual files or entire folders. The app reads STEP, IGES, STL, OBJ, 3MF, glTF, FBX, DXF, PLY, and more.
Click Convert
Choose your output format, set quality and unit options, and click Convert. Batch processing handles hundreds of files with progress tracking.
Watch a STEP file become a print-ready STL
Format Compatibility
| Format | Extensions | Input | Output | Notes |
|---|---|---|---|---|
| STEP | .step, .stp | ✓ | ✓ | ISO 10303 — AP203, AP214, AP242 |
| IGES | .iges, .igs | ✓ | ✓ | Legacy CAD exchange standard |
| STL | .stl | ✓ | ✓ | ASCII & binary. Most common for 3D printing |
| OBJ | .obj | ✓ | ✓ | With MTL material files |
| 3MF | .3mf | ✓ | ✓ | Multi-color, multi-material. Modern 3D printing format |
| glTF / GLB | .gltf, .glb | ✓ | ✓ | Runtime 3D for web, AR/VR, game engines |
| FBX | .fbx | ✓ | ✓ | Autodesk interchange for game engines |
| VRML | .wrl, .vrml, .wrz | ✓ | ✓ | Virtual Reality Modeling Language |
| DXF | .dxf | ✓ | ✓ | 3D DXF for CAD/CNC |
| PLY | .ply | ✓ | ✓ | Point cloud and mesh data |
| BREP | .brep, .brp | ✓ | ✓ | OpenCascade native geometry |
| Collada | .dae | ✓ | ✓ | Collada — interchange format |
Automate with the Command Line
3D CAD Converter includes a full CLI. Automate conversions in scripts, CI/CD pipelines, or watched-folder workflows.
# Convert a single STEP file to STL cadconvert convert model.step -f stl --quality fine # Batch convert a folder cadconvert batch ./models -f obj --repair --units mm # Inspect a 3D file cadconvert info assembly.step
Download 3D CAD Converter and start converting files in minutes. Free trial: 10 conversions with every feature. No credit card required.
Free trial: 10 conversions with every feature. No credit card required. Windows 10/11.