Both the DXF and STEP format CAD files are pretty common, so you should have no trouble in finding a program that is capable of convert DXF drawings to ISO STEP format, i.e. to convert dxf to step. Some 3D modeling / CAD tools that should support dxf to step conversion are listed below.
Home > Search converters: dxf to step
Conversion of dxf file format to step file format beta
Search for dxf to step converter or software able to handle these file types.
Convert AutoCAD DXF Drawing Exchange Format to ISO-10303 STEP product data file.
We have found 21 software records in our database eligible for .dxf to .step file format conversion.
Microsoft Windows software 
- convert dxf to step on Windows
SolidWorks
A 2D and 3D CAD construction software
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from dxf file | No | No | No | No | No | Yes | Yes | No |
to step file | No | No | No | No | No | Yes | Yes | No |
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned dxf to step. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
CATIA
A PLM/CAD/CAM/CAE software suite
Autodesk Inventor
Autodesk Inventor is modeling application used to create 3D digital prototypes
Argon
A 3D modelling software
AutoCAD
Leading 2D and 3D CAD development software from Autodesk
CrossManager
A CAD converter with huge format support
IronCAD
A 3D modelling application
TurboCAD
A family of 2D/3D CAD software products for Windows
3ds Max (3D Studio Max)
A widely-used 3D animation application from Autodesk
Alibre Design Professional
A set of 3D modeling tools
Apple macOS / Mac OS X software 
- convert dxf to step on OS X
AutoCAD for Mac
A Mac version of popular Autodesk AutoCAD software
TurboCAD for Mac
A 2D/3D CAD software for OS X
Multiplatform software 
- convert dxf to step on any platform
Autodesk Fusion 360
3D CAD/CAM tool for product development
FreeCAD
An open source multiplatform 3D CAD/MCAD/CAx/CAE/PLM modeler
Additional links: Open dxf file, Open step file
DXF
Files with dxf extension can be typically found as 2D CAD drawings saved in the Drawing Exchange Format, a common format for exchange of engineering drawings.
STEP
Files with step extension are quite often found as 3D model / part files saved in STEP (Standard for the Exchange of Product Data) format.
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