CAD formats - Autodesk Civil 3D

An overview of CAD formats supported in current versions of main Autodesk products, their conversion options, import, export. Which product can I use to convert format X to format Y?

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Application	Vendor	Localized?	Free?	Link
Autodesk Civil 3D 2025	Autodesk		-	Details »
Autodesk Civil 3D opens formats:	3DS ACIS/SAT ADSK ALG CatiaV4 CatiaV5 CityGML DGN DTM DWG DXF GPK Granite IAM IFC IGES IMX IPT JT KML LandXML NX/UG Parasolid PDF-2D Pro/E+Creo Rhino SDF SHP SKP SolidWorks STEP TIN
Autodesk Civil 3D saves formats:	ACIS/SAT ALG CityGML DGN DTM DWF DWG DXF GPK IFC IGES IMX KML LandXML PDF-2D SDF STL TIN

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From format:

-choose-123D (.123d;.123dx)12D (.12da)3DS (.3ds)3MF (.3mf)3PS (.3ps)A3S (.a3s)ACIS/SAT (.sat)ADSK (.adsk)Alembic (.abc)ALG (.alg)AMF (.amf)APF (.apf)ASE (.ase)ASM (.smt)AXM (.axm)C4D (.c4d)C4X (.c4x)CAM (.cam360)CatiaV4 (.model;.session)CatiaV5 (.CATPart;.CATProduct)CityGML (.xml)CSB (.csb)DAE (.dae)DDX (.ddx; .ddz)DGK (.dgk)DGN (.dgn)DMT (.dmt)DTM (.dtm)DWF (.dwf;.dwfx)DWG (.dwg)DXF (.dxf)EDF (.edf)F3D (.f3d)F3Z (.f3z)FBX (.fbx)FIL (.fil)gbXML (.xml)GeoJSON (.geojson)glTF (.glb; .gltf)GPK (.gpk)Granite (.g)IAM (.iam)IDW (.idw)IFC (.ifc)IGA (.iga)IGES (.igs;.iges)IMX (.imx)IPT (.ipt)IV (.iv)JAMA-IS (.jamais;.jama)JT (.jt)KML (.kml;.kmz)LandXML (.xml)MA (.ma)MAX (.max)MB (.mb)MFR (.mfr)MIX (.mix)Navisworks (.nwd;.nwf;.nwc)NX/UG (.prt)OBJ (.obj)OSB (.osb)Parasolid (.x_t;.x_b)PDF-2D (.pdf;.ai)PDF-3D (.pdf)PLY (.ply)Pro/E+Creo (.prt;.asm)QSM (.qsm)RCM (.rcm)RFA (.rfa)Rhino (.3dm)RVT (.rvt)SDF (.sdf)Shoe (.shoe)SHP (.shp)SIM (.sim; .sim360)SKP (.skp)SMesh (.smesh)SMT (.smt)Solid Edge (.par)SolidWorks (.sldprt;.sldasm;.prt;.asm)SpaceClaim (.scdoc)STEP (.stp;.step)STL (.stl;.stla;.stlb)SVG (.svg)Thing (.thing)TIN (.tin)Top (.top; .cam)TSM/TSS (.tsm; .tss)U3D (.u3d)USD (.usd;.usdz)VDA-FS (.vda)VDA-IS (.vdais)VRML (.wrl;.wrz)VTFX (.vtfx)VUE (.vue)Wire (.wire)XGL (.xgl;.zgl)

→ to format:

-choose-123D (.123d;.123dx)12D (.12da)3DS (.3ds)3MF (.3mf)3PS (.3ps)A3S (.a3s)ACIS/SAT (.sat)ADSK (.adsk)Alembic (.abc)ALG (.alg)AMF (.amf)APF (.apf)ASE (.ase)ASM (.smt)AXM (.axm)C4D (.c4d)C4X (.c4x)CAM (.cam360)CatiaV4 (.model;.session)CatiaV5 (.CATPart;.CATProduct)CityGML (.xml)CSB (.csb)DAE (.dae)DDX (.ddx; .ddz)DGK (.dgk)DGN (.dgn)DMT (.dmt)DTM (.dtm)DWF (.dwf;.dwfx)DWG (.dwg)DXF (.dxf)EDF (.edf)F3D (.f3d)F3Z (.f3z)FBX (.fbx)FIL (.fil)gbXML (.xml)GeoJSON (.geojson)glTF (.glb; .gltf)GPK (.gpk)Granite (.g)IAM (.iam)IDW (.idw)IFC (.ifc)IGA (.iga)IGES (.igs;.iges)IMX (.imx)IPT (.ipt)IV (.iv)JAMA-IS (.jamais;.jama)JT (.jt)KML (.kml;.kmz)LandXML (.xml)MA (.ma)MAX (.max)MB (.mb)MFR (.mfr)MIX (.mix)Navisworks (.nwd;.nwf;.nwc)NX/UG (.prt)OBJ (.obj)OSB (.osb)Parasolid (.x_t;.x_b)PDF-2D (.pdf;.ai)PDF-3D (.pdf)PLY (.ply)Pro/E+Creo (.prt;.asm)QSM (.qsm)RCM (.rcm)RFA (.rfa)Rhino (.3dm)RVT (.rvt)SDF (.sdf)Shoe (.shoe)SHP (.shp)SIM (.sim; .sim360)SKP (.skp)SMesh (.smesh)SMT (.smt)Solid Edge (.par)SolidWorks (.sldprt;.sldasm;.prt;.asm)SpaceClaim (.scdoc)STEP (.stp;.step)STL (.stl;.stla;.stlb)SVG (.svg)Thing (.thing)TIN (.tin)Top (.top; .cam)TSM/TSS (.tsm; .tss)U3D (.u3d)USD (.usd;.usdz)VDA-FS (.vda)VDA-IS (.vdais)VRML (.wrl;.wrz)VTFX (.vtfx)VUE (.vue)Wire (.wire)XGL (.xgl;.zgl)

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The listed 3D CAD formats may be available in multiple versions and variants, please check their compatibility in the documentation of the respective CAD application. Free and Trial versions of the listed applications can be downloaded from the Download section.

Please contact your Autodesk reseller for detailed technical support to CAD formats.