# AutoCAD version history

AutoCAD is a commercial computer-aided design (CAD) and drafting software application by Autodesk. The first release of the software started with version 1.0 in December 1982. The software has been continuously updated since its initial release.
AutoCAD opens documents with DWG compatibility as a "DWG file format version code" where the specific version code can be found by opening the .dwg file in Windows Notepad or any text editor program. The file contents starts with this string. The file format version code (tag) is dependent on the AutoCAD version.

## History

The following table summarizes the version history of the AutoCAD software application.
| Release name | Version | Date of release | DWG tag | Release | OS support | Comments |
| Version 1.0 | 1.0 | December 1982 | MC0.0 | 1 | | DWG R1.0 file format |
| Version 1.2 | 1.2 | April 1983 | AC1.2 | 2 | | DWG R1.2 file format |
| Version 1.3 | 1.3 | August 1983 | | 3 | | DWG R1.3 file format |
| Version 1.4 | 1.4 | October 1983 | AC1.40 | 4 | | DWG R1.4 file format |
| Version 2.0 | 2.0 | October 1984 | AC1.50 | 5 | | DWG R2.05 file format |
| Version 2.1 | 2.1 | May 1985 | AC2.10 | 6 | | DWG R2.1 file format |
| Version 2.5 | 2.5 | June 1986 | AC1002 | 7 | | DWG R2.5 file format |
| Version 2.6 | 2.6 | April 1987 | AC1003 | 8 | | DWG R2.6 file format. Last version to run without a math co-processor. (autocad 9/10 ran on 286/386/486sx without math co-processor 486dx which had built in math co-processor was released in 1989) |
| Release 9 | 9.0 | September 1987 | AC1004 | 9 | | DWG R9 file format |
| Release 10 | 10.0 | October 1988 | AC1006 | 10 | MS-DOS | DWG R10 file format. Sole release for System 6, Xenix and OS/2 1.x. |
| Release 11 | 11.0 | October 1990 | AC1009 | 11 | MS-DOS 3.3 | DWG R11 file format, the first version to incorporate basic 3D solid modeling via the Advanced Modeling Extension (AME). Last release for DOS 286. |
| Release 11 | 11.0 | March 1992 | AC1009 | 11 | Mac OS 7 | DWG R11 file format, the first version to incorporate basic 3D solid modeling via the Advanced Modeling Extension (AME). Last release for DOS 286. |
| Release 12 | 12.0 | June 1992 | AC1009 | 12 | MS-DOS 3.3Mac OS 7 | DWG R11/R12 file format. Last release for SunOS 4.1 and Ultrix. |
| Release 12 | 12.0 | February 1993 | AC1009 | 12 | Windows 3.1 | DWG R11/R12 file format. Last release for SunOS 4.1 and Ultrix. |
| Release 13 | 13.0 | November 1994 | AC1012 | 13 | MS-DOS 5.0Windows 3.1NT 3.1NT 3.5 | DWG R13 file format. Sole release for Windows NT Alpha. Last release for AIX, Solaris, IRIX and HP-UX. |
| Release 14 | 14.0 | February 1997 | AC1014 | 14 | Windows 95NT 3.51NT 4.0 | DWG R14 file format |
| 2000 | 15.0 | March 1999 | AC1015 | 15 | Windows 9598NT 4.0 | DWG 2000 file format. Multi-Document Interface. |
| 2000i | 15.1 | July 2000 | AC1015 | 16 | Windows 9598NT 4.02000 | |
| 2002 | 15.2 | June 2001 | AC1015 | 17 | Windows 98MENT 4.02000 | |
| 2004 | 16.0 | March 2003 | AC1018 | 18 | Windows NT 4.02000XP | DWG 2004 file format |
| 2005 | 16.1 | March 2004 | AC1018 | 19 | Windows 2000XP | |
| 2006 | 16.2 | March 2005 | AC1018 | 20 | Windows 2000XP | Dynamic Block |
| 2007 | 17.0 | March 2006 | AC1021 | 21 | Windows 2000XP | DWG 2007 file format |
| 2008 | 17.1 | March 2007 | AC1021 | 22 | Windows 2000XP | Annotative objects introduced. AutoCAD 2008 and higher (including AutoCAD LT) can directly import and underlay DGN V8 files. |
| 2009 | 17.2 | March 2008 | AC1021 | 23 | Windows XPVista | Revisions to the user interface including the introduction of the Ribbon |
| 2010 | 18.0 | March 24, 2009 | AC1024 | 24 | Windows XPVista7 | DWG 2010 file format introduced. Parametrics introduced. Mesh 3D solid modeling was introduced. PDF underlays. Both 32-bit and 64-bit versions of AutoCAD 2010 and AutoCAD LT 2010 are compatible with and supported under Microsoft Windows 7. |
| 2011 | 18.1 | March 25, 2010 | AC1024 | 25 | Windows XPVista7 | Surface modeling, surface analysis, and object transparency introduced. Intel-only on Mac OS X. |
| 2011 | 18.1 | October 15, 2010 | AC1024 | 25 | Mac OS X 10.510.6 | Surface modeling, surface analysis, and object transparency introduced. Intel-only on Mac OS X. |
| 2012 | 18.2 | March 22, 2011 | AC1024 | 26 | Windows XPVista7 | Associative array, model documentation, DGN editing. Support for complex line types in DGN files is improved in AutoCAD 2012. |
| 2012 | 18.2 | August 19, 2011 | AC1024 | 26 | Mac OS X 10.610.710.8 | Associative array, model documentation, DGN editing. Support for complex line types in DGN files is improved in AutoCAD 2012. |
| 2013 | 19.0 | March 27, 2012 | AC1027 | 27 | Windows XPVista78 | DWG 2013 file format (AC1027) |
| 2014 | 19.1 | March 26, 2013 | AC1027 | 28 | Windows XPVista78 | File tabs, design feed, reality capture, live maps |
| 2015 | 20.0 | March 27, 2014 | AC1027 | 29 | Windows 788.1 | Line smoothing (anti-aliasing) |
| 2016 | 20.1 | March 23, 2015 | AC1027 | 30 | Windows 7 SP18.110 | More comprehensive canvas, richer design context, and intelligent new tools such as smart dimensioning, coordination model, and enhanced PDFs |
| 2017 | 21.0 | March 21, 2016 | AC1027 | 31 | Windows 7 SP18.110 | PDF import, associative center marks, and centerlines, DirectX 11 graphics |
| 2018 | 22.0 | March 21, 2017 | AC1032 | 32 | Windows 7 SP18.110 | DWG 2018 file format and Mac. "Off-screen" selection. |
| 2019 | 23.0 | March 22, 2018 | AC1032 | 33 | Windows 7 SP18.110 | Specialized toolsets (electrical, architecture, MEP, etc.) with One AutoCAD, Shared Views, DWG Compare, Save To AutoCAD Web & Mobile |
| 2020 | 23.1 | March 27, 2019 | AC1032 | 34 | Windows 7 SP18.110 | New dark theme, quick measurements, blocks palette, Microsoft OneDrive and Box.com integration, dropped support for 32bit Windows |
| 2021 | 24.0 | March 25, 2020 | AC1032 | 35 | Vendor dependentWindows 8.110 | Drawing history, Xref compare, Google Drive integration, offline activation removed, Quick Trim & Extend Mode |
| 2022 | 24.1 | March 23, 2021 | AC1032 | 36 | Vendor dependentWindows 1011 | Trace, Count, Floating Drawing |
| 2023 | 24.2 | March 28, 2022 | AC1032 | 37 | Windows 1011 | Count, Floating Windows, Trace Markup Import and Markup Assist with text recognition, improved 3D Graphics |
| 2024 | 24.3 | March 27, 2023 | AC1032 | 38 | Windows 1011 | |
| 2025 | 25.0 | March 26, 2024 | AC1032 | 39 | Windows 1011 | ObjectArx .Net plugin model changed from .Net Framework to .Net Core |