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