ASM File Converter
We can't convert CAD Assembly (ASM) files — here's what does work.
Why ASM can't be converted here
ASM is Creo / Siemens NX's own closed format. Its internal structure is proprietary, so no open-source library can read it — which is why no converter outside Creo / Siemens NX can open your file.
What does work: open the file in Creo / Siemens NX and export it as STEP. We convert STEP reliably.
Convert STEP files →About ASM Format
CAD Assembly (ASM) is a 3D file format used primarily for Engineering and CAD.
The .asm extension mirrors .prt but for multi-part assemblies in the same family of parametric CAD systems, storing references between individual parts plus their constraints.
Frequently Asked Questions
CAD Assembly (ASM) is a 3D file format. The .asm extension mirrors .prt but for multi-part assemblies in the same family of parametric CAD systems, storing references between individual parts plus their constraints. Common use cases include: Engineering, CAD.