Choose your output format, then upload a model. Available outputs depend on the source file.
Convert to STEP Convert to IGES Convert to STL Convert to OBJ Convert to 3MF Convert to glTF Convert to GLB
View and measure without an account. Register or sign in to convert, save files and create share links. Recipients can view shared models without an account. Files are uploaded for server processing. Check the upload limit shown in the workspace before selecting a file.
Upload, convert, download
- Choose a target format above to open the conversion workspace.
- Drop a supported file into the upload area, or choose an existing workspace model. For an assembly ZIP, select the root model if prompted.
- Confirm an available output, register or sign in, and start conversion. When processing finishes, download the converted file.
Supported conversion paths
| Input | Available outputs |
|---|---|
| STEP / STP | IGES, STL, OBJ, 3MF, glTF, GLB |
| IGES / IGS | STEP, STL, OBJ, 3MF, glTF, GLB |
| SolidWorks SLDPRT, Inventor IPT, CATIA CATPart, Siemens NX PRT, Solid Edge PAR / PSM, Parasolid X_T / X_B, ACIS SAT / SAB | Exact STEP when the B-Rep is read completely, otherwise mesh STEP; STL, OBJ, 3MF, glTF, GLB |
| SolidWorks SLDASM, Inventor IAM, JT, Rhino 3DM | Mesh STEP, STL, OBJ, 3MF, glTF, GLB |
| STL | OBJ, 3MF, glTF, GLB, mesh STEP |
| OBJ | STL, 3MF, glTF, GLB, mesh STEP |
Mesh STEP stores display triangles in a STEP file: useful for review and overall size, not for machining features. 3MF and glTF outputs are triangle meshes written from the preview in millimetres; they carry no exact surfaces. CATIA CATProduct assemblies are not converted.
An extension alone does not guarantee a successful conversion: source versions, missing references and damaged geometry can affect the result. The workspace shows the outputs enabled for your selected file. Dedicated pages cover IGES to STEP, STEP to IGES, STEP to STL, STEP to OBJ, STEP to 3MF, STEP to glTF, STEP to GLB, STL to OBJ and OBJ to STL. Read the full format limitations. Format hubs collect the checks for IGES, JT, Parasolid, ACIS SAT and mesh formats.
Assemblies and ZIP files
Include the assembly and its referenced components together in a ZIP, retaining their relative folder paths. Choose the assembly root rather than an arbitrary part. Missing components cannot be reconstructed from the assembly filename.
What conversion preserves
STEP and IGES are geometry exchange formats; converting does not recreate the original feature history, constraints or editable design tree. Mesh formats approximate surfaces with triangles. Converting STL to OBJ does not turn a mesh into a precise CAD solid.
Check units, dimensions, component placement and warnings after conversion. For machining, verify the output in the receiving CAD/CAM system before using it. You can also view and measure the result or read about measurement accuracy.
Temporary files and privacy
Conversion requires a signed-in account. The current model and its results are saved to My files when space is available; other guest files are not saved automatically. If the library is full, conversion can continue temporarily and the result shows its expiry. Download temporary results before they expire. See the privacy and deletion policy for processing and diagnostic retention details.
Real CADProps screenshots
The screenshots show the English interface. Captions and instructions describe the same operations.
Sample source and verification
Sample source and verification
OBJ or glTF downloads can be ZIP packages containing materials or external resources. Keep the downloaded filename and extension, extract the complete package for another application, or upload the ZIP for a supported preview. Renaming a ZIP to OBJ or glTF does not turn it into that format.
Original article: CADProps · https://www.cadprops.com/convert/