CAD Files
CAD (Computer-Aided Design) files may contain 2D or 3D designs. They are generated by CAD software programs, which can be used to create models or architecture plans. 2D CAD files are often referred to as drawings, while 3D files are often called models, parts, or assemblies.
Common CAD file extensions include .DWG, .DXF, .DGN, and .STL.
| Extension | File Type | Popularity |
|---|---|---|
| .BAK | AutoCAD Drawing Backup | 4.7 |
| .AXM | FormIt Sketch | 4.5 |
| .CIR | Micro-Cap Schematic | 4.5 |
| .BDC | West Point Bridge Designer Design File | 4.4 |
| .PSM | Solid Edge Sheet Metal File | 4.4 |
| .IBA | Lectra Clothing Design Pieces File | 4.4 |
| .SMB | Autodesk Shape Manager Binary File | 4.3 |
| .EPF | EAGLE Project | 4.3 |
| .DLV | CATIA 4 Export File | 4.3 |
| .SIM | SimLab Composer Scene | 4.3 |
| .CPA | CADSTAR PCB Archive File | 4.3 |
| .DSNX | RoadEng Location Design Document | 4.3 |
| .AFS | STAAD.foundation Project File | 4.3 |
| .OPT | Opterecenja File | 4.3 |
| .TCT | TurboCAD Drawing Template | 4.3 |
| .MCX | MICRO CADAM-X/6000 Model Data File | 4.3 |
| .MP12 | Multisim 12 Project | 4.3 |
| .PAT | AutoCAD Hatch Pattern File | 4.2 |
| .JT | JT Open CAD File | 4.2 |
| .GSM | Graphic Description Language File | 4.2 |
| .EDF | Edificius Project | 4.2 |
| .FPC | FreePCB Printed Circuit Board Layout | 4.2 |
| .DB1 | Tekla Structures Model File | 4.2 |
| .PSV | Pipe System Viewer File | 4.2 |
| .RTD | Robot Structural Analysis Design File | 4.2 |
| .JVSG | Video Surveillance Project | 4.2 |
| .MC9 | Mastercam 9 Geometry File | 4.2 |
| .LCF | Archicad Library Container File | 4.2 |
| .TERX | RoadEng Terrain Design Document | 4.1 |
| .MS14 | Multisim 14 Circuit Design File | 4.1 |
| .CAD | BobCAD-CAM File | 4.1 |
| .CATPRODUCT | CATIA V5 Assembly File | 4.1 |
| .GDS | Graphic Data System File | 4.1 |
| .JOB | MetaCAM Nest Job File | 4.1 |
| .GCODE | G-Code 3D Printer File | 4.1 |
| .MODEL | CATIA 3D Model | 4.0 |
| .WDF | Wintech Drawing File | 4.0 |
| .DRA | Dolphin PartMaster Drawing File | 4.0 |
| .IDE | Inventor iFeature | 4.0 |
| .CAD | Autodesk QuickCAD File | 4.0 |
| .MTO | FastCAM MTO Text File | 4.0 |
| .MSM | Multisim Circuit Design File | 4.0 |
| .ASY | LTspice Symbol File | 4.0 |
| .PC7 | PowerCADD 7 Drawing File | 4.0 |
| .XV3 | Lattice XVL Geometry File | 4.0 |
| .DC3 | DesignCAD 3D ASCII Drawing | 4.0 |
| .FCSTD1 | FreeCAD Backup Document | 4.0 |
| .CBDDLP | Chitubox Sliced 3D Model | 4.0 |
| .AFD | Alphacam Flame Drawing | 4.0 |
| .LIN | AutoCAD Linetype File | 4.0 |
| .CIB | Luminaire Data File | 4.0 |
| .DWT | AutoCAD Drawing Template | 4.0 |
| .NC | DSTV Numerical Control File | 4.0 |
| .3DL | Sierra LandDesigner 3D File | 4.0 |
| .CYP | Home Design Project | 4.0 |
| .G | FlashForge G-Code File | 4.0 |
| .LOGICLY | Logicly Circuit | 4.0 |
| .VET | Lectra Cutter's Must File | 4.0 |
| .CTB | Chitubox Sliced 3D Model | 4.0 |
| .RSG | RaySupreme Graph | 4.0 |
| .ADI | AutoCAD Device-Independent Binary Plotter File | 4.0 |
| .LI3D | Live Interior 3D Document | 4.0 |
| .SAT | ACIS SAT 3D Model | 3.9 |
| .123DX | 123D Design Model File | 3.9 |
| .ICD | IronCAD 2D Drawing File | 3.9 |
| .DES | Pro/DESKTOP CAD File | 3.9 |
| .PSS | AutoCAD Plot Stamp Settings File | 3.9 |
| .SKF | AutoSketch Drawing | 3.9 |
| .MS13 | Multisim 13 Circuit Design File | 3.9 |
| .DST | AutoCAD Sheet Set | 3.8 |
| .PWT | AutoCAD Publish To Web Template | 3.8 |
| .JVSGZ | Compressed Video Surveillance Project | 3.8 |
| .EDN | EDIF Implementation Netlist File | 3.8 |
| .MHS | Xilinx XPS Hardware Specification File | 3.8 |
| .SPT | SpeedTree Tree Data File | 3.8 |
| .SLDASM | SolidWorks Assembly | 3.8 |
| .SLDPRT | SolidWorks Part | 3.8 |
| .BLK | AutoCAD Block Template File | 3.8 |
| .NWF | Navisworks File Set | 3.8 |
| .FZP | Fritzing XML Part Description | 3.8 |
| .DRU | EAGLE Design Rules | 3.8 |
| .PHJ | PhCNC Project File | 3.8 |
| .DC2 | DesignCAD 2D ASCII Drawing | 3.8 |
| .CF2 | Common File Format File | 3.8 |
| .BCD | RealView Debugger Board Chip Definition File | 3.8 |
| .FZB | Fritzing Bin File | 3.8 |
| .PLN | Archicad Solo Project | 3.7 |
| .NC | Mastercam Numerical Control File | 3.7 |
| .123D | Autodesk 123D Drawing | 3.7 |
| .DSN | OrCAD Design File | 3.7 |
| .STL | Stereolithography File | 3.7 |
| .MP11 | Multisim 11 Project File | 3.7 |
| .CFF | Common File Format | 3.7 |
| .MP10 | Multisim 10 Project File | 3.7 |
| .MIN | Okuma CNC Program File | 3.7 |
| .ISO | Arbortext IsoDraw Document | 3.7 |
| .DWFX | Design Web Format XPS File | 3.7 |
| .IGS | IGES Drawing | 3.7 |
| .PLA | Archicad Project Archive | 3.7 |
| .XNC | Exchange NC File | 3.7 |
| .DC1 | DevCad Document | 3.7 |
| .ISOZ | Compressed Arbortext IsoDraw Illustration | 3.7 |
| .IDV | Inventor Design View | 3.7 |
| .MDE | Archicad Education Module | 3.7 |
| .DWS | AutoCAD Drawing Standards File | 3.7 |
| .TC2 | TurboCAD 2D Mac Drawing | 3.7 |
| .FCW | FastCAD Windows Drawing | 3.7 |
| .ASM | Solid Edge Assembly File | 3.7 |
| .DGN | MicroStation Design | 3.7 |
| .SCAD | OpenSCAD Script | 3.6 |
| .LDR | LDraw Model File | 3.6 |
| .IAM | Inventor Assembly | 3.6 |
| .STP | STEP 3D CAD File | 3.6 |
| .X_B | Parasolid Model Part File | 3.6 |
| .SHX | AutoCAD Compiled Shape File | 3.6 |
| .BMF | FloorPlan File | 3.6 |
| .RIG | vRigger Design File | 3.6 |
| .RSM | RouterSim Network Visualizer File | 3.6 |
| .FMZ | Form•Z Project File | 3.6 |
| .SCH | gEDA Schematic File | 3.6 |
| .BDL | CoCreate Bundle File | 3.6 |
| .PLP | Archicad Teamwork Project | 3.6 |
| .VWX | Vectorworks Design | 3.6 |
| .CDW | KOMPAS Document | 3.6 |
| .IF | Procedimientos-Uno IFWin Project File | 3.6 |
| .SVD | SolidView Design File | 3.6 |
| .CZD | CAD Zone Drawing | 3.6 |
| .PRT | CADKEY Part File | 3.6 |
| .ICS | IronCAD 3D Scene | 3.5 |
| .FZZ | Fritzing Shareable Project File | 3.5 |
| .CGR | CATIA Graphical Representation File | 3.5 |
| .EASM | eDrawings Assembly File | 3.5 |
| .ART | ArtCAM Model | 3.5 |
| .SCH | EAGLE Schematics File | 3.5 |
| .FZ | Fritzing Project File | 3.5 |
| .DWG | AutoCAD Drawing | 3.5 |
| .CATPART | CATIA V5 Part File | 3.5 |
| .PRT | Creo Parametric Part | 3.5 |
| .ACT | Alma CAD/CAM Document | 3.5 |
| .BBCD | BobCAD-CAM Document | 3.5 |
| .CYP | Home Designer Pro Project File | 3.5 |
| .DRW | Personal Designer Drawing File | 3.5 |
| .LIBPKG | Altium Designer Integrated Library Package | 3.5 |
| .CIRCUIT | KTechlab Circuit Design File | 3.5 |
| .DGK | Delcam 3D Model File | 3.5 |
| .EZD | EzCad2 Laser Engraving Design | 3.5 |
| .LTL | Luminaire Data File | 3.5 |
| .123 | PCB123 Circuit Board Design | 3.5 |
| .GXC | General CADD Pro Component | 3.5 |
| .SAB | ACIS SAB Model | 3.5 |
| .PLUSH | Plushify Project | 3.5 |
| .UNT | AutoCAD Unit Definition File | 3.5 |
| .DFX | Drafix CAD File | 3.5 |
| .PRJPCBSTRUCTURE | Altium Designer PCB Project Structure | 3.5 |
| .CAM | FastCAM CAM File | 3.5 |
| .TSF | Strater Template File | 3.5 |
| .GXM | General CADD Pro Macro File | 3.5 |
| .ANY | AnyRail Layout Plan | 3.5 |
| .MODFEM | Femap Model | 3.5 |
| .HSC | Aspen HYSYS Simulation File | 3.5 |
| .ASC | LTspice Circuit Schematic File | 3.5 |
| .DXF | Drawing Exchange Format File | 3.5 |
| .MCD | MiniCAD Design File | 3.5 |
| .STEP | STEP 3D Model | 3.5 |
| .PRT | Unigraphics Part File | 3.4 |
| .TAK | TAK 2000 Thermal Model File | 3.4 |
| .MP7 | Multisim 7 Project File | 3.4 |
| .RRA | vRigger Rigging Gear File | 3.4 |
| .PSF | AutoCAD PostScript Patterns File | 3.4 |
| .JBC | Jam STAPL Byte-Code File | 3.4 |
| .NC1 | Mastercam Numerical Control File | 3.4 |
| .JAM | Jam STAPL File | 3.4 |
| .PRG | PC-DMIS Part Program File | 3.4 |
| .CDL | CADKEY Wireframe Design File | 3.4 |
| .G | BRL-CAD Geometry File | 3.4 |
| .FCSTD | FreeCAD Document | 3.4 |
| .TCD | TurboCAD Mac Deluxe Drawing | 3.4 |
| .IPT | Inventor Part | 3.4 |
| .CATDRAWING | CATIA V5 Drawing | 3.4 |
| .EWB | Electronics Workbench Circuit Design File | 3.4 |
| .XISE | Xilinx ISE Project File | 3.4 |
| .WDP | AutoCAD Electrical Project File | 3.4 |
| .CNC | PartMaster CNC File | 3.4 |
| .DXE | AutoCAD Data Extraction Template | 3.4 |
| .CNC | CNC Machine Tool Path | 3.3 |
| .ELD | Eulumdat Formatted Luminaire Data File | 3.3 |
| .LIZD | Live Interior 3D Compressed Document | 3.3 |
| .ULD | Unified Luminaire Data File | 3.3 |
| .RED | CADViewer Redline Markup File | 3.3 |
| .EZP | AutoCAD Ecscad Project Backup File | 3.3 |
| .DSNWRK | Altium Designer Workspace File | 3.3 |
| .TCM | TurboCAD Mac Drawing | 3.3 |
| .G3D | GOM 3D File | 3.3 |
| .XBF | XCAF Binary 3D Model | 3.3 |
| .BPM | Bizagi Process Modeler | 3.3 |
| .DXX | AutoCAD Drawing Interchange Attribute File | 3.3 |
| .OPJ | OrCAD Project File | 3.3 |
| .NGC | Xilinx Generated Netlist File | 3.3 |
| .ARD | ArtiosCAD Workspace File | 3.3 |
| .CAM | Gerber CAM Job File | 3.3 |
| .TOPVIW | TopSolid'Viewer Document | 3.3 |
| .DLX | DIALux Document | 3.3 |
| .SEW | Home Embroidery Format | 3.3 |
| .IDW | Inventor Drawing | 3.3 |
| .LDT | Eulumdat Formatted Luminaire Data File | 3.3 |
| .IPN | Inventor Presentation | 3.3 |
| .DC | DesignCAD Design File | 3.3 |
| .OLB | OrCAD Symbol Library File | 3.3 |
| .123C | Autodesk 123C Drawing | 3.3 |
| .A2L | ASAP2 ECU Description File | 3.3 |
| .SLDDRW | SolidWorks Drawing | 3.3 |
| .RDF | Relux Project File | 3.2 |
| .HSF | HOOPS Stream Format File | 3.2 |
| .DRWDOT | SolidWorks Drawing Template | 3.2 |
| .GXD | General CADD Pro Drawing | 3.2 |
| .TSC | TINA Design File | 3.2 |
| .GCD | Generic CADD Drawing File | 3.2 |
| .DRG | AllyCAD Drawing File | 3.2 |
| .BXL | Accelerated Designs PCB Library File | 3.2 |
| .2D | VersaCAD 2D Drawing File | 3.2 |
| .MIN | MAX Interchange Notation File | 3.2 |
| .PHO | Gerber Photoplot File | 3.2 |
| .LAY6 | Sprint Layout 6 PCB Layout File | 3.1 |
| .FPD | Front Panel Designer Project | 3.1 |
| .PRT | Solid Edge Part File | 3.1 |
| .GEO | TruTops Geometry File | 3.1 |
| .BIT | Xilinx Bitstream File | 3.1 |
| .BRD | Cadence Allegro PCB Design | 3.1 |
| .MS11 | Multisim 11 Circuit Design File | 3.1 |
| .DCD | DesignCAD Drawing | 3.1 |
| .BRD | KiCad PCB Design File | 3.1 |
| .CDDX | Circuit Diagram Document | 3.0 |
| .MS12 | Multisim 12 Circuit Design File | 3.0 |
| .EQN | GAL Equation File | 3.0 |
| .BREP | BRep 3D Model File | 3.0 |
| .FZBZ | Fritzing Bundled Bin File | 3.0 |
| .PM3 | Crouzet Logic Software M3 File | 3.0 |
| .LIA | P-CAD ASCII Library file | 3.0 |
| .NPL | Xilinx ISE 5-6 Project File | 3.0 |
| .IFCXML | Industry Foundation Classes XML File | 3.0 |
| .ADT | AutoCAD Audit Log | 3.0 |
| .BPMC | Bizagi Process Modeler Collaboration | 3.0 |
| .FAN | Form•Z Animation File | 3.0 |
| .X_T | Parasolid Model Part File | 3.0 |
| .MFP | Markforged Print | 3.0 |
| .TCD | Technobox CAD Drawing | 3.0 |
| .T3001 | TARGET 3001! Circuit Design Project File | 3.0 |
| .TGI | TowGeom Input File | 3.0 |
| .PRTDOT | SolidWorks Part Template | 3.0 |
| .ASMDOT | SolidWorks Assembly Template | 3.0 |
| .MP13 | Multisim 13 Project | 3.0 |
| .NEU | Pro/ENGINEER Neutral File | 3.0 |
| .EPRT | eDrawings File | 3.0 |
| .EASMX | eDrawings Assembly XPS File | 3.0 |
| .TC3 | TurboCAD 2D/3D Mac Drawing | 3.0 |
| .SMT | Autodesk Shape Manager Text File | 3.0 |
| .RCM | Autodesk Reality Capture Mesh | 3.0 |
| .SZA | HiCAD Drawing File | 3.0 |
| .IPF | iMPACT Project File | 3.0 |
| .MMG | Model Master 3 Axis Flat File | 3.0 |
| .LOGICLYLIB | Logicly Integrated Circuit Library | 3.0 |
| .LFVIEW | Leapfrog Viewer Scene | 3.0 |
| .WBT | Webots World | 3.0 |
| .CHITUBOX | Chitubox Project | 3.0 |
| .NWD | Navisworks Document | 3.0 |
| .GINSPECT_PRJ | GOM Inspect Project File | 3.0 |
| .SCDOC | SpaceClaim Document | 3.0 |
| .EWD | EasyWOOD Design File | 3.0 |
| .HUS | Husqvarna Embroidery File | 3.0 |
| .PC6 | PowerCADD 6 Drawing File | 3.0 |
| .IC3D | IC3D Scene File | 3.0 |
| .FNC | QuickCAM 3D CNC File | 3.0 |
| .DFT | Solid Edge Draft Document | 3.0 |
| .3W | XYZprinting Sliced Model File | 3.0 |
| .SCHDOC | Altium Designer Schematic Document | 3.0 |
| .DGB | FlashCAD Drawing Database | 3.0 |
| .VDS | Visual Design Stream | 3.0 |
| .EXB | CAXA Draft | 2.9 |
| .IPJ | Inventor Project | 2.9 |
| .CRV | VCarve Pro Design File | 2.9 |
| .NWC | Navisworks Cache File | 2.9 |
| .PRO | KiCad Project | 2.8 |
| .VND | Type3 Design File | 2.8 |
| .LYR | bestIMAGE Design File | 2.8 |
| .MP14 | Multisim 14 Project | 2.8 |
| .PIPE | PIPE-FLO Project File | 2.8 |
| .BIMX | BIM Explorer File | 2.8 |
| .GX | FlashForge 3D Printing File | 2.8 |
| .DRW | ANVIL Drawing File | 2.8 |
| .CND | Melco Condensed Embroidery File | 2.8 |
| .RCD | LEGO MINDSTORMS Recording File | 2.8 |
| .TCW | TurboCAD Drawing File | 2.8 |
| .TBP | Tekla BIMsight Project | 2.7 |
| .PSU | PSU Designer Document | 2.7 |
| .FLX | FelixCAD Drawing | 2.7 |
| .VTF | 3DESIGN CAD File | 2.7 |
| .MVS | Microchip Verification Specification File | 2.7 |
| .MDL | Lectra Modaris Clothing Design File | 2.7 |
| .TCP | TurboCAD Mac Pro Drawing | 2.7 |
| .CMP | Solid Edge Wire Harness File | 2.7 |
| .NGD | Xilinx Netlist File | 2.6 |
| .LYC | bestIMAGE Compressed Design File | 2.6 |
| .TCX | TurboCAD 3D Model Text File | 2.5 |
| .PLC | Archicad Teamwork Draft | 2.5 |
| .TPL | Archicad Template | 2.5 |
| .EDRW | SolidWorks eDrawings File | 2.5 |
| .KIT | 2020 Design Live File | 2.5 |
| .PRJPCB | Altium Designer PCB Project | 2.5 |
| .PCS | Pfaff Embroidery File | 2.5 |
| .RML | Redline Markup Language File | 2.5 |
| .PRJSCR | Altium Designer Script Project | 2.5 |
| .SCH | KiCad Schematic File | 2.5 |
| .ATT | Alphacam Lathe Tool File | 2.4 |
| .GXH | General CADD Pro Hatch Pattern File | 2.4 |
| .TOPPRJ | TopSolid Project | 2.4 |
| .DVG | Graphic Works Vector Graphic | 2.4 |
| .ISE | Xilinx ISE Project | 2.3 |
| .SYM | gEDA Symbol File | 2.3 |
| .3DC | RoboCell Cell Setup File | 2.3 |
| .DRA | OrCAD Drawing File | 2.3 |
| .DBQ | AutoCAD Query Set | 2.3 |
| .MP8 | Multisim 8 Project | 2.3 |
| .TOP | TopSolid Design Document | 2.3 |
| .RS | RapidSketch Document | 2.2 |
| .CKD | KeyCreator Design File | 2.2 |
| .SDG | Strater Project File | 2.2 |
| .SBP | OpenSBP CNC Program File | 2.2 |
| .GBX | Gerber PCB File | 2.1 |
| .SMG | SolidWorks Composer File | 2.1 |
| .BSW | StruWalker 3D Model | 2.1 |
| .MP9 | Multisim 9 Project File | 2.0 |
| .BBCDX | BobCAD-CAM Document | 2.0 |
| .FPP | Front Panel Project | 2.0 |
| .MS9 | Multisim 9 Circuit Design File | 2.0 |
| .STA | Vectorworks Design Template | 2.0 |
| .IQP | IntelliQuilter Pattern | 2.0 |
| .QPM | Quick Pallet Maker Input Data | 2.0 |
| .PWD | Solid Edge Weldment Document | 2.0 |
| .MS7 | Multisim 7 Circuit Design File | 2.0 |
| .FZM | Fritzing Module File | 2.0 |
| .RCV | RoofCon Viewer Project File | 2.0 |
| .PPA | Archicad Teamwork Project Archive | 2.0 |
| .PIPD | PIPE-FLO Demo Project File | 2.0 |
| .SCH | ExpressSCH Schematics File | 2.0 |
| .BSWX | BIMReview 3D Model | 2.0 |
| .IDCL | Inventor Desktop Content Library File | 2.0 |
| .FM | FeatureCAM Part | 2.0 |
| .CKT | KeyCreator Design Template | 2.0 |
| .DXO | DesignXOver Speaker Circuit Design File | 2.0 |
| .PRJMBD | Altium Designer Multi-board Project | 2.0 |
| .EZC | AutoCAD Ecscad Components Backup File | 2.0 |
| .CYG | Home Design Object | 2.0 |
| .AD_PRT | Alibre Design Part | 2.0 |
| .PBB | Protobot Beta Project | 2.0 |
| .L3B | LEGO 3D Model File | 2.0 |
| .BPZ | Easy Blue Print Symbol Library | 1.8 |
| .MOD | Femap Model | 1.7 |
| .DSG | Control Studio Document | 1.7 |
| .IFCZIP | Compessed IFC File | 1.5 |
| .SST | Artec Studio Project | 1.5 |
| .DC2 | DevCad Cam Pro Document | 1.5 |
| .HCP | HydroCAD Project File | 1.4 |
| .UPF | Unified Power Format File | 1.3 |
| .CEL | MicroStation Cell Library | 1.2 |
| .MOD | Archicad Module | 1.2 |
| .CMP | Generic CADD Component File | 1.0 |
| .FCD | FastCAD DOS Drawing | 1.0 |
| .PCA | Archicad Teamwork Draft Archive | 1.0 |