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.^[1] 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.^[2]

History

The following table summarizes the version history of the AutoCAD software application.

Release name	Version	Date of release	DWG tag[2]	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[3]	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.[4]
Release 11	11.0	October 1990	AC1009	11	MS-DOS 3.3[5]	DWG R11 file format, the first version to incorporate basic 3D solid modeling via the Advanced Modeling Extension (AME). Last release for DOS 286.
		March 1992			Mac OS 7
Release 12	12.0	June 1992		12	MS-DOS 3.3[6] Mac OS 7	DWG R11/R12 file format. Last release for SunOS 4.1 and Ultrix.
		February 1993			Windows 3.1[7]
Release 13	13.0	November 1994	AC1012	13	MS-DOS 5.0 Windows 3.1[8] NT 3.1 NT 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 95 NT 3.51 NT 4.0	DWG R14 file format
2000	15.0	March 1999	AC1015	15	Windows 95[9] 98 NT 4.0	DWG 2000 file format. Multi-Document Interface.
2000i	15.1	July 2000		16	Windows 95 98 NT 4.0 2000
2002	15.2	June 2001		17	Windows 98[10] ME NT 4.0 2000
2004	16.0	March 2003	AC1018	18	Windows NT 4.0[11] 2000 XP	DWG 2004 file format
2005	16.1	March 2004		19	Windows 2000 XP
2006	16.2	March 2005		20		Dynamic Block
2007	17.0	March 2006	AC1021	21		DWG 2007 file format
2008	17.1	March 2007		22		Annotative objects introduced. AutoCAD 2008 and higher (including AutoCAD LT) can directly import and underlay DGN V8 files.
2009	17.2	March 2008		23	Windows XP Vista[12]	Revisions to the user interface including the introduction of the Ribbon
2010	18.0	March 24, 2009	AC1024	24	Windows XP Vista 7[13][14]	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		25		Surface modeling, surface analysis, and object transparency introduced. Intel-only on Mac OS X.
		October 15, 2010			Mac OS X 10.5 10.6[15]
2012	18.2	March 22, 2011		26	Windows XP Vista 7[16]	Associative array, model documentation, DGN editing. Support for complex line types in DGN files is improved in AutoCAD 2012.
		August 19, 2011			Mac OS X 10.6 10.7 10.8[17]
2013	19.0	March 27, 2012	AC1027	27	Windows XP Vista 7 8[18][19]	DWG 2013 file format (AC1027)
2014	19.1	March 26, 2013		28		File tabs, design feed, reality capture, live maps
2015	20.0	March 27, 2014		29	Windows 7 8 8.1[20]	Line smoothing (anti-aliasing)
2016	20.1	March 23, 2015		30	Windows 7 SP1 8.1 10[21][22][23][24][25]	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		31		PDF import, associative center marks, and centerlines, DirectX 11 graphics
2018	22.0	March 21, 2017	AC1032	32		DWG 2018 file format and Mac. "Off-screen" selection.[26]
2019	23.0	March 22, 2018		33		Specialized toolsets (electrical, architecture, MEP, etc.) with One AutoCAD, Shared Views, DWG Compare, Save To AutoCAD Web & Mobile
2020	23.1	March 27, 2019		34		New dark theme, quick measurements, blocks palette, Microsoft OneDrive and Box.com integration, dropped support for 32bit Windows[27]
2021	24.0	March 25, 2020		35	Vendor dependent[28] Windows 8.1 10	Drawing history, Xref compare, Google Drive integration, offline activation removed,[29] Quick Trim & Extend Mode[30]
2022	24.1	March 23, 2021		36	Vendor dependent Windows 10 11[31]	Trace, Count, Floating Drawing
2023	24.2	March 28, 2022		37	Windows 10 11[32]	Count, Floating Windows, Trace Markup Import and Markup Assist with text recognition, improved 3D Graphics[33]
2024	24.3	March 27, 2023		38
2025	25.0	March 26, 2024		39		ObjectArx .Net plugin model changed from .Net Framework to .Net Core[34]
2026	25.1	March 25, 2025		40