AutoCAD Civil 3D file extensions

AutoCAD Civil 3D works with the following file extensions:

Note: You can click on any file extension link from the list below, to view its detailed information. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. However most, if not all directly associated file extensions should be listed with its appropriate program. Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program.

AutoCAD Civil 3D default file extension associations

The most common file format used with the specific file extension

.tbl file extension is used for Table data

Other file extensions or file formats developed for use with AutoCAD Civil 3D

.bsn.cgx.clt.cof.dab.dcn.dfm.duh.fbk.gpd.gpw.hdc.htp.icn.idf.inp.lk#.pcn.pda.pdt.psp.pst.pst.rat.rf.rtc.scn.sdb.sdbx.sdc.sed.sim.slp.smp.tab.tcd.tcp.tdf.vrt.wk1.xsd.xsp

Common file extensions used by AutoCAD Civil 3D

.mdb.tbl

Other file extensions associated with AutoCAD Civil 3D

.err.sdf.ssc

Comparison table of actions that AutoCAD Civil 3D can perform with each of its associated file type ^beta

This table might not contain all possible associated or supported file types or may contain incorrect data.
If you need more information please contact the developers of AutoCAD Civil 3D (Autodesk, Inc.), or check out their product website.