Home > Supported File Formats > DWG to VRML

How to convert DWG (AutoCAD, DXF) to VRML (VRML2, VRML97, X3D)?

PolyTrans|CAD+DCC performs mathematically precise CAD, DCC/Animation, GIS and BIM 3D file conversions into all key downstream 3D packages and file formats. Okino software is used and trusted throughout the world by many tens of thousands of 3D professionals in mission & production critical environments, backed by respectable personal support directly from our core development team.

DWG

DXF and DWG are the native file formats of the Autodesk AutoCAD product since 1982. DWG is the binary file variation to the ASCII DXF file format. These files can be viewed by many programs including Autodesk's free DWG TrueView application. It is a closed file format but has been documented by the Open Design Alliance.

At Okino we consider DXF/DWG to be one of the worst 3D file formats when translating 3D model data between applications (depending on its contents). There is very little understanding about this in the 3D graphics world. As outlined in our "CAD Data Sourcing Suggestons and Rules" page you should ideally use the DWF-3D file format when sourcing from either AutoCAD, Navisworks, Revit and optionally Autodesk Inventor.

Due to deep history, Autodesk software can embed ACIS SAT "BREP solids" data in some of its DXF/DWG files. This is the ideal case as the "BREP solids" geometry definitions lead to cleaner and higher fidelity MCAD file conversions. But even so, it would generally be a safer bet to use a STEP AP214 or "IGES BREP solids" file in such cases.

VRML

VRML2 ("Virtual Reality Markup Language") is one of the very best of non-MCAD file formats, little appreciated and lost (mainly) to the annals of time. Many people (wrongly) believe that FBX is the primary "translation file format" but VRML2 pre-dated it by at least 10+ years and has equally good or better functionality (and in an open, non-proprietary specification). It was supplemented or augmented by the X3D (XML-based) file format in the mid 2000s. The Web3D Consortium supports the evolution of VRML2/X3D and of its acceptance as ISO and IEC standards.

Without getting into specifics, VRML2 can be considered a "rich file format" in terms of its functionality and capabilities, yet few software programs fully utilize all of that functionality. It could have, and should have, become the defacto "universal 3D file format" for data translation and long term storage but it did not have the clout nor marketing dollars that other newer formats had such as from Autodesk (FBX, DWF), Sony (COLLADA), Adobe+Intel (U3D), Dassault Systemes (3DXML) and others.

VRML1 and VRML2 are 3D file formats with a long and complex history. They were originally developed in the mid 1990s to define 'interactive 3D worlds' on the then-new World Wide WEB. However, statistically speaking, VRML2 became more well known as a high quality "data translaton and storage" file format, partly due to Okino pushing it as such a standard in the industry. It was implemented by a good number of 3D software packages and hence became a "reliable back door" to convert 3D assets out of those packages before FBX, DWF, COLLADA, U3D and other similar file formats came along in the mid to late 2000s, or glTF in the late 2010's.

It is also known as VRML2, X3D, Classic VRML, VRML97, VRML1 and Inventor2.

DWG import converter's overview

VRML export converter's overview