STEP to DWG Converter
STEP (.stp / .step) is the neutral 3D exchange format used across CAD systems; DWG is AutoCAD's native format. Converting STEP to DWG brings a 3D model into AutoCAD so you can edit it, generate 2D layouts, or produce manufacturing drawings. The 3D solid imports directly; 2D documentation is then created from it inside AutoCAD.
STEP is an ISO-standard neutral format holding precise 3D solid geometry, readable by nearly every CAD application.
DWG is AutoCAD's native format for 2D drafting and 3D modelling, and the standard for technical drawings in the AutoCAD ecosystem.
How to Convert STEP to DWG
Import the STEP file
In AutoCAD use the IMPORT command and select your .stp/.step file, or open it in Fusion 360 which reads STEP natively.
Save or export as DWG
Once imported, use Save As → DWG (AutoCAD) or File → Export → DWG (Fusion 360) to write the native drawing file.
Create 2D views if needed
For drawings, use AutoCAD's FLATSHOT or the drawing/layout tools to generate 2D views from the imported 3D solid.
STEP to DWG — FAQ
Does STEP to DWG keep the 3D model?
Yes. The STEP solid imports into AutoCAD as a 3D object. You can keep it in 3D or derive 2D views from it for documentation.
What's the free way to do this?
Fusion 360 (free for personal use) opens STEP and exports DWG. FreeCAD can also read STEP and export DXF/DWG-compatible geometry.
STP vs STEP — are they the same?
Yes. .stp and .step are the same STEP format; the extension differs only by convention. Both convert to DWG the same way.
Will curves and surfaces survive?
Solid geometry transfers well. Very complex freeform surfaces can occasionally need cleanup after import, depending on the CAD tool.