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 |
| .G | FlashForge G-Code File | 4.5 |
| .FPC | FreePCB Printed Circuit Board Layout | 4.4 |
| .CIRCUIT | KTechlab Circuit Design File | 4.4 |
| .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 |
| .DLV | CATIA 4 Export File | 4.3 |
| .EPF | EAGLE Project | 4.3 |
| .SMB | Autodesk Shape Manager Binary File | 4.3 |
| .SIM | SimLab Composer Scene | 4.3 |
| .DSNX | RoadEng Location Design Document | 4.3 |
| .AFS | STAAD.foundation Project File | 4.3 |
| .MCX | MICRO CADAM-X/6000 Model Data File | 4.3 |
| .TCT | TurboCAD Drawing Template | 4.3 |
| .MP12 | Multisim 12 Project | 4.3 |
| .FCSTD1 | FreeCAD Backup Document | 4.3 |
| .PLUSH | Plushify Project | 4.3 |
| .OPT | Opterecenja File | 4.3 |
| .DB1 | Tekla Structures Model File | 4.2 |
| .EDF | Edificius Project | 4.2 |
| .MSM | Multisim Circuit Design File | 4.2 |
| .RTD | Robot Structural Analysis Design File | 4.2 |
| .MS14 | Multisim 14 Circuit Design File | 4.2 |
| .MC9 | Mastercam 9 Geometry File | 4.2 |
| .JVSG | Video Surveillance Project | 4.2 |
| .PSV | Pipe System Viewer File | 4.2 |
| .LCF | Archicad Library Container File | 4.2 |
| .CPA | CADSTAR PCB Archive File | 4.1 |
| .TERX | RoadEng Terrain Design Document | 4.1 |
| .CAD | BobCAD-CAM File | 4.1 |
| .GCODE | G-code 3D Printer File | 4.0 |
| .PC7 | PowerCADD 7 Drawing File | 4.0 |
| .XV3 | Lattice XVL Geometry File | 4.0 |
| .DWT | AutoCAD Drawing Template | 4.0 |
| .AFD | Alphacam Flame Drawing | 4.0 |
| .DC3 | DesignCAD 3D ASCII Drawing | 4.0 |
| .ASY | LTspice Symbol File | 4.0 |
| .IDE | Inventor iFeature | 4.0 |
| .FZP | Fritzing XML Part Description | 4.0 |
| .LI3D | Live Interior 3D Document | 4.0 |
| .RSG | RaySupreme Graph | 4.0 |
| .LOGICLY | Logicly Circuit | 4.0 |
| .NC | DSTV Numerical Control File | 4.0 |
| .CYP | Home Design Project | 4.0 |
| .CTB | Chitubox Sliced 3D Model | 4.0 |
| .GSM | Graphic Description Language File | 4.0 |
| .JOB | MetaCAM Nest Job File | 4.0 |
| .VET | Lectra Cutter's Must File | 4.0 |
| .CIB | Luminaire Data File | 4.0 |
| .CAD | Autodesk QuickCAD File | 4.0 |
| .MTO | FastCAM MTO Text File | 4.0 |
| .CBDDLP | Chitubox Sliced 3D Model | 4.0 |
| .EZD | EzCad2 Laser Engraving Design | 4.0 |
| .ADI | AutoCAD Device-Independent Binary Plotter File | 4.0 |
| .PAT | AutoCAD Hatch Pattern File | 4.0 |
| .123DX | 123D Design Model File | 3.9 |
| .SCH | gEDA Schematic File | 3.9 |
| .MODEL | CATIA 3D Model | 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 |
| .DST | AutoCAD Sheet Set | 3.9 |
| .CATPRODUCT | CATIA V5 Assembly File | 3.8 |
| .GDS | Graphic Data System File | 3.8 |
| .SAT | ACIS SAT 3D Model | 3.8 |
| .JT | JT Open CAD File | 3.8 |
| .MHS | Xilinx XPS Hardware Specification File | 3.8 |
| .PWT | AutoCAD Publish To Web Template | 3.8 |
| .EDN | EDIF Implementation Netlist File | 3.8 |
| .JVSGZ | Compressed Video Surveillance Project | 3.8 |
| .STL | Stereolithography File | 3.8 |
| .SLDPRT | SolidWorks Part | 3.8 |
| .SPT | SpeedTree Tree Data File | 3.8 |
| .FCW | FastCAD Windows Drawing | 3.8 |
| .BLK | AutoCAD Block Template File | 3.8 |
| .NWF | Navisworks File Set | 3.8 |
| .PHJ | PhCNC Project File | 3.8 |
| .DWFX | Design Web Format XPS File | 3.8 |
| .LDR | LDraw Model File | 3.8 |
| .DC2 | DesignCAD 2D ASCII Drawing | 3.8 |
| .SCAD | OpenSCAD Script | 3.8 |
| .CF2 | Common File Format File | 3.8 |
| .DRU | EAGLE Design Rules | 3.8 |
| .NC | Mastercam Numerical Control File | 3.7 |
| .PLN | Archicad Solo Project | 3.7 |
| .LIN | AutoCAD Linetype File | 3.7 |
| .BDL | CoCreate Bundle File | 3.7 |
| .123D | Autodesk 123D Drawing | 3.7 |
| .MP11 | Multisim 11 Project File | 3.7 |
| .BBCD | BobCAD-CAM Document | 3.7 |
| .GX | FlashForge 3D Printing File | 3.7 |
| .MP10 | Multisim 10 Project File | 3.7 |
| .MIN | Okuma CNC Program File | 3.7 |
| .3DL | Sierra LandDesigner 3D File | 3.7 |
| .SLDASM | SolidWorks Assembly | 3.7 |
| .IAM | Inventor Assembly | 3.7 |
| .IGS | IGES Drawing | 3.7 |
| .ISO | Arbortext IsoDraw Document | 3.7 |
| .STP | STEP 3D CAD File | 3.7 |
| .TC2 | TurboCAD 2D Mac Drawing | 3.7 |
| .DWS | AutoCAD Drawing Standards File | 3.7 |
| .IDV | Inventor Design View | 3.7 |
| .PLA | Archicad Project Archive | 3.7 |
| .DC1 | DevCad Document | 3.7 |
| .ISOZ | Compressed Arbortext IsoDraw Illustration | 3.7 |
| .FZBZ | Fritzing Bundled Bin File | 3.7 |
| .XNC | Exchange NC File | 3.7 |
| .MDE | Archicad Education Module | 3.7 |
| .DSN | OrCAD Design File | 3.7 |
| .VWX | Vectorworks Design | 3.6 |
| .CDW | KOMPAS Document | 3.6 |
| .DGN | MicroStation Design | 3.6 |
| .SHX | AutoCAD Compiled Shape File | 3.6 |
| .X_B | Parasolid Model Part File | 3.6 |
| .FZ | Fritzing Project File | 3.6 |
| .BMF | FloorPlan File | 3.6 |
| .FMZ | Form•Z Project File | 3.6 |
| .RIG | vRigger Design File | 3.6 |
| .RSM | RouterSim Network Visualizer File | 3.6 |
| .PLP | Archicad Teamwork Project | 3.6 |
| .CZD | CAD Zone Drawing | 3.6 |
| .SVD | SolidView Design File | 3.6 |
| .IF | Procedimientos-Uno IFWin Project File | 3.6 |
| .FZZ | Fritzing Shareable Project File | 3.6 |
| .PRT | CADKEY Part File | 3.6 |
| .ASC | LTspice Circuit Schematic File | 3.6 |
| .FCSTD | FreeCAD Document | 3.6 |
| .PRO | KiCad Project | 3.6 |
| .ART | ArtCAM Model | 3.5 |
| .JAM | Jam STAPL File | 3.5 |
| .DWG | AutoCAD Drawing | 3.5 |
| .PRT | Creo Parametric Part | 3.5 |
| .DFX | Drafix CAD File | 3.5 |
| .GXC | General CADD Pro Component | 3.5 |
| .123 | PCB123 Circuit Board Design | 3.5 |
| .SAB | ACIS SAB Model | 3.5 |
| .ANY | AnyRail Layout Plan | 3.5 |
| .HSF | HOOPS Stream Format File | 3.5 |
| .CYP | Home Designer Pro Project File | 3.5 |
| .ACT | Alma CAD/CAM Document | 3.5 |
| .HSC | Aspen HYSYS Simulation File | 3.5 |
| .MODFEM | Femap Model | 3.5 |
| .MMG | Model Master 3 Axis Flat File | 3.5 |
| .UNT | AutoCAD Unit Definition File | 3.5 |
| .TSF | Strater Template File | 3.5 |
| .GXM | General CADD Pro Macro File | 3.5 |
| .LTL | Luminaire Data File | 3.5 |
| .CAM | FastCAM CAM File | 3.5 |
| .LIBPKG | Altium Designer Integrated Library Package | 3.5 |
| .PBB | Protobot Beta Project | 3.5 |
| .PRJPCBSTRUCTURE | Altium Designer PCB Project Structure | 3.5 |
| .DXF | Drawing Exchange Format File | 3.5 |
| .STEP | STEP 3D Model | 3.5 |
| .MCD | MiniCAD Design File | 3.5 |
| .BCD | RealView Debugger Board Chip Definition File | 3.4 |
| .XISE | Xilinx ISE Project File | 3.4 |
| .PRT | Unigraphics Part File | 3.4 |
| .JBC | Jam STAPL Byte-Code File | 3.4 |
| .PSF | AutoCAD PostScript Patterns File | 3.4 |
| .MP7 | Multisim 7 Project File | 3.4 |
| .RRA | vRigger Rigging Gear File | 3.4 |
| .NC1 | Mastercam Numerical Control File | 3.4 |
| .TAK | TAK 2000 Thermal Model File | 3.4 |
| .EASM | eDrawings Assembly File | 3.4 |
| .CATPART | CATIA V5 Part File | 3.4 |
| .CDL | CADKEY Wireframe Design File | 3.4 |
| .PRG | PC-DMIS Part Program File | 3.4 |
| .TCD | TurboCAD Mac Deluxe Drawing | 3.4 |
| .FNC | QuickCAM 3D CNC File | 3.4 |
| .EWB | Electronics Workbench Circuit Design File | 3.4 |
| .DGK | Delcam 3D Model File | 3.4 |
| .DXX | AutoCAD Drawing Interchange Attribute File | 3.4 |
| .WDP | AutoCAD Electrical Project File | 3.4 |
| .CFF | Common File Format | 3.4 |
| .IPT | Inventor Part | 3.3 |
| .DXE | AutoCAD Data Extraction Template | 3.3 |
| .TCM | TurboCAD Mac Drawing | 3.3 |
| .G3D | GOM 3D File | 3.3 |
| .LIZD | Live Interior 3D Compressed Document | 3.3 |
| .ELD | Eulumdat Formatted Luminaire Data File | 3.3 |
| .PRJPCB | Altium Designer PCB Project | 3.3 |
| .RED | CADViewer Redline Markup File | 3.3 |
| .EZP | AutoCAD Ecscad Project Backup File | 3.3 |
| .SCH | KiCad Schematic File | 3.3 |
| .ULD | Unified Luminaire Data File | 3.3 |
| .XBF | XCAF Binary 3D Model | 3.3 |
| .DSNWRK | Altium Designer Workspace File | 3.3 |
| .CGR | CATIA Graphical Representation File | 3.3 |
| .BPM | Bizagi Process Modeler | 3.3 |
| .ARD | ArtiosCAD Workspace File | 3.3 |
| .NGC | Xilinx Generated Netlist File | 3.3 |
| .OPJ | OrCAD Project File | 3.3 |
| .G | BRL-CAD Geometry File | 3.3 |
| .DLX | DIALux Document | 3.3 |
| .TOPVIW | TopSolid'Viewer Document | 3.3 |
| .CATDRAWING | CATIA V5 Drawing | 3.3 |
| .SEW | Home Embroidery Format | 3.3 |
| .LDT | Eulumdat Formatted Luminaire Data File | 3.3 |
| .CAM | Gerber CAM Job File | 3.3 |
| .ICS | IronCAD 3D Scene | 3.3 |
| .IDW | Inventor Drawing | 3.3 |
| .A2L | ASAP2 ECU Description File | 3.3 |
| .DC | DesignCAD Design File | 3.3 |
| .123C | Autodesk 123C Drawing | 3.3 |
| .WDF | Wintech Drawing File | 3.3 |
| .BRD | KiCad PCB Design File | 3.2 |
| .SCH | EAGLE Schematics File | 3.2 |
| .PHO | Gerber Photoplot File | 3.2 |
| .CNC | CNC Machine Tool Path | 3.2 |
| .DRWDOT | SolidWorks Drawing Template | 3.2 |
| .GXD | General CADD Pro Drawing | 3.2 |
| .GCD | Generic CADD Drawing File | 3.2 |
| .BXL | Accelerated Designs PCB Library File | 3.2 |
| .DRG | AllyCAD Drawing File | 3.2 |
| .TSC | TINA Design File | 3.2 |
| .2D | VersaCAD 2D Drawing File | 3.2 |
| .MIN | MAX Interchange Notation File | 3.2 |
| .PRT | Solid Edge Part File | 3.1 |
| .3W | XYZprinting Sliced Model File | 3.1 |
| .GEO | TruTops Geometry File | 3.1 |
| .LAY6 | Sprint Layout 6 PCB Layout File | 3.1 |
| .MS11 | Multisim 11 Circuit Design File | 3.1 |
| .BIT | Xilinx Bitstream File | 3.1 |
| .DFT | Solid Edge Draft Document | 3.1 |
| .FPD | Front Panel Designer Project | 3.1 |
| .SLDDRW | SolidWorks Drawing | 3.1 |
| .CNC | PartMaster CNC File | 3.1 |
| .RDF | Relux Project File | 3.1 |
| .DCD | DesignCAD Drawing | 3.1 |
| .OLB | OrCAD Symbol Library File | 3.1 |
| .CDDX | Circuit Diagram Document | 3.1 |
| .SCDOC | SpaceClaim Document | 3.0 |
| .HUS | Husqvarna Embroidery File | 3.0 |
| .ASM | Solid Edge Assembly File | 3.0 |
| .DGB | FlashCAD Drawing Database | 3.0 |
| .PC6 | PowerCADD 6 Drawing File | 3.0 |
| .TCD | Technobox CAD Drawing | 3.0 |
| .T3001 | TARGET 3001! Circuit Design Project File | 3.0 |
| .NEU | Pro/ENGINEER Neutral File | 3.0 |
| .IPN | Inventor Presentation | 3.0 |
| .TC3 | TurboCAD 2D/3D Mac Drawing | 3.0 |
| .IPF | iMPACT Project File | 3.0 |
| .DRA | Dolphin PartMaster Drawing File | 3.0 |
| .FAN | Form•Z Animation File | 3.0 |
| .GINSPECT_PRJ | GOM Inspect Project File | 3.0 |
| .EWD | EasyWOOD Design File | 3.0 |
| .IC3D | IC3D Scene File | 3.0 |
| .BPMC | Bizagi Process Modeler Collaboration | 3.0 |
| .SYM | gEDA Symbol File | 3.0 |
| .BIMX | BIM Explorer File | 3.0 |
| .MP13 | Multisim 13 Project | 3.0 |
| .EPRT | eDrawings File | 3.0 |
| .SZA | HiCAD Drawing File | 3.0 |
| .RCM | Autodesk Reality Capture Mesh | 3.0 |
| .EASMX | eDrawings Assembly XPS File | 3.0 |
| .ASMDOT | SolidWorks Assembly Template | 3.0 |
| .PRTDOT | SolidWorks Part Template | 3.0 |
| .TGI | TowGeom Input File | 3.0 |
| .MFP | Markforged Print | 3.0 |
| .LOGICLYLIB | Logicly Integrated Circuit Library | 3.0 |
| .LFVIEW | Leapfrog Viewer Scene | 3.0 |
| .WBT | Webots World | 3.0 |
| .VDS | Visual Design Stream | 3.0 |
| .SCHDOC | Altium Designer Schematic Document | 3.0 |
| .CHITUBOX | Chitubox Project | 3.0 |
| .ADT | AutoCAD Audit Log | 3.0 |
| .EQN | GAL Equation File | 3.0 |
| .NPL | Xilinx ISE 5-6 Project File | 3.0 |
| .IFCXML | Industry Foundation Classes XML File | 3.0 |
| .MS12 | Multisim 12 Circuit Design File | 3.0 |
| .PM3 | Crouzet Logic Software M3 File | 3.0 |
| .FZM | Fritzing Module File | 3.0 |
| .LIA | P-CAD ASCII Library file | 3.0 |
| .DRW | Personal Designer Drawing File | 3.0 |
| .BREP | BRep 3D Model File | 3.0 |
| .X_T | Parasolid Model Part File | 3.0 |
| .NWD | Navisworks Document | 3.0 |
| .EXB | CAXA Draft | 2.9 |
| .IPJ | Inventor Project | 2.9 |
| .BRD | Cadence Allegro PCB Design | 2.9 |
| .CRV | VCarve Pro Design File | 2.9 |
| .NWC | Navisworks Cache File | 2.9 |
| .VND | Type3 Design File | 2.8 |
| .PSU | PSU Designer Document | 2.8 |
| .TCW | TurboCAD Drawing File | 2.8 |
| .MP14 | Multisim 14 Project | 2.8 |
| .PIPE | PIPE-FLO Project File | 2.8 |
| .LYR | bestIMAGE Design File | 2.8 |
| .RCD | LEGO MINDSTORMS Recording File | 2.8 |
| .CND | Melco Condensed Embroidery File | 2.8 |
| .TBP | Tekla BIMsight Project | 2.7 |
| .FLX | FelixCAD Drawing | 2.7 |
| .VTF | 3DESIGN CAD File | 2.7 |
| .TCP | TurboCAD Mac Pro Drawing | 2.7 |
| .SDG | Strater Project File | 2.7 |
| .MVS | Microchip Verification Specification File | 2.7 |
| .CMP | Solid Edge Wire Harness File | 2.7 |
| .MDL | Lectra Modaris Clothing Design File | 2.7 |
| .NGD | Xilinx Netlist File | 2.6 |
| .LYC | bestIMAGE Compressed Design File | 2.6 |
| .EDRW | SolidWorks eDrawings File | 2.5 |
| .KIT | 2020 Design Live File | 2.5 |
| .RML | Redline Markup Language File | 2.5 |
| .TCX | TurboCAD 3D Model Text File | 2.5 |
| .PCS | Pfaff Embroidery File | 2.5 |
| .PRJSCR | Altium Designer Script Project | 2.5 |
| .TPL | Archicad Template | 2.5 |
| .PLC | Archicad Teamwork Draft | 2.5 |
| .ATT | Alphacam Lathe Tool File | 2.4 |
| .TOPPRJ | TopSolid Project | 2.4 |
| .GXH | General CADD Pro Hatch Pattern File | 2.4 |
| .DRW | ANVIL Drawing File | 2.4 |
| .DVG | Graphic Works Vector Graphic | 2.4 |
| .CKD | KeyCreator Design File | 2.3 |
| .ISE | Xilinx ISE Project | 2.3 |
| .3DC | RoboCell Cell Setup File | 2.3 |
| .DBQ | AutoCAD Query Set | 2.3 |
| .MP8 | Multisim 8 Project | 2.3 |
| .TOP | TopSolid Design Document | 2.3 |
| .SBP | OpenSBP CNC Program File | 2.2 |
| .GBX | Gerber PCB File | 2.1 |
| .RS | RapidSketch Document | 2.1 |
| .BSW | StruWalker 3D Model | 2.1 |
| .SMG | SolidWorks Composer File | 2.1 |
| .DRA | OrCAD Drawing File | 2.0 |
| .PIPD | PIPE-FLO Demo Project File | 2.0 |
| .SMT | Autodesk Shape Manager Text File | 2.0 |
| .FM | FeatureCAM Part | 2.0 |
| .FPP | Front Panel Project | 2.0 |
| .QPM | Quick Pallet Maker Input Data | 2.0 |
| .PWD | Solid Edge Weldment Document | 2.0 |
| .MS9 | Multisim 9 Circuit Design File | 2.0 |
| .MS7 | Multisim 7 Circuit Design File | 2.0 |
| .L3B | LEGO 3D Model File | 2.0 |
| .BSWX | BIMReview 3D Model | 2.0 |
| .RCV | RoofCon Viewer Project File | 2.0 |
| .IDCL | Inventor Desktop Content Library File | 2.0 |
| .CKT | KeyCreator Design Template | 2.0 |
| .DXO | DesignXOver Speaker Circuit Design File | 2.0 |
| .PRJMBD | Altium Designer Multi-board Project | 2.0 |
| .CYG | Home Design Object | 2.0 |
| .AD_PRT | Alibre Design Part | 2.0 |
| .PPA | Archicad Teamwork Project Archive | 2.0 |
| .BBCDX | BobCAD-CAM Document | 2.0 |
| .IQP | IntelliQuilter Pattern | 2.0 |
| .STA | Vectorworks Design Template | 2.0 |
| .EZC | AutoCAD Ecscad Components Backup File | 2.0 |
| .MP9 | Multisim 9 Project File | 1.9 |
| .BPZ | Easy Blue Print Symbol Library | 1.8 |
| .MOD | Femap Model | 1.7 |
| .DSG | Control Studio Document | 1.7 |
| .SCH | ExpressSCH Schematics File | 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 |
| .FCD | FastCAD DOS Drawing | 1.0 |
| .CMP | Generic CADD Component File | 1.0 |
| .PCA | Archicad Teamwork Draft Archive | 1.0 |