Convert STEP to OFF: The Expert Tips

STEP to OFF: Resources

Provided below is a curated list of supplementary resources focusing on the interoperability and exchange between STEP and OFF files. Leverage these to streamline the STEP to OFF files conversion.


The STEP (STandardized Exchange of Product) file format is extensively used for the exchange of 3D data across various computer systems, including CAD, CAM, and CAE. As STEP geometry data is stored in a text-based format, exporting triangular meshes with thousands or even millions of faces using Autoconverter software may lead to larger file sizes. However, if your geometry defines a manifold solid, our software will strive to create an optimized faceted BREP representation, potentially reducing the STEP file size by up to one-third. It’s crucial to note that while the STEP file format supports colors per assembly, it lacks an alpha component. Consequently, any transparency settings will not be retained in the final STEP file.


The OFF (Object File Format) is a file extension used for ASCII text files that contain geometric data of 3D polygonal objects. The OFF file format supports standard 3D triangles, quads, and other generic polygonal shapes. Our Autoconverter software serves as a primary OFF file converter, allowing you to easily convert OFF files into various other mesh file formats. Alternatively, Autoshaper, our other OFF file converter, enables you to transform your OFF files into smooth NURBS shapes. However, it’s worth noting that while the OFF file format is versatile, it does not support the conversion of materials, textures, or group names from more sophisticated 3D file formats.