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CAD tip # 868:

Question CAD
% platform category

How to find drawings coming from a given version of AutoCAD?

(or how to find which AutoCAD Release has generated given DWG file)

You can use the Find Files function in Windows (Start button). Enter *.DWG as file name in the Advanced tab enter text:

MC0.0 - DWG from Rel. 1.1
AC1.2 - DWG from Rel. 1.2
AC1.4 - DWG from Rel. 1.4
AC1.50 - DWG from Rel. 2.0
AC2.10 - DWG from Rel. 2.10
AC1002 - DWG from Rel. 2.5
AC1003 - DWG from Rel. 2.6
AC1004 - DWG from Rel.9
AC1006 - DWG from Rel.10
AC1009 - DWG from Rel.11/12 (or LT R1/R2)
AC1012 - DWG from Rel.13 (or LT95)
AC1014 - DWG from Rel.14, 14.01 (or LT97/LT98)
AC1015 - DWG from AutoCAD 2000/2000i/2002 (or LT, Map or relative Desktop version)
AC1018 - DWG from AutoCAD 2004/2005/2006 (or other product in the "2004", "2005" or "2006" family)
AC1021 - DWG from AutoCAD 2007/2008/2009 (or other product of the "2007", "2008" and "2009" families)
AC1024 - DWG from AutoCAD 2010/2011/2012 (or other product of the "2010", "2011" and "2012" families)
AC1027 - DWG from AutoCAD 2013/2014 (or other product of the "2013" and "2014" families)

There are also other, internal file versions: AC1001=pre-2.5, AC1005=pre-R10, AC1007=pre-R11, AC1008=pre-R11, AC1010=pre-R13a, AC1011=pre-R13b, AC1013=pre-R14, AC1500=pre-2000, AC402a=pre-2004a, AC402b=pre-2004b

You can also text-view your DWG file and look at the string at the beginning of your file. Or you can use the DWGinfo utility available at www.cadstudio.cz/download.

To visually identify .DWG file version by its icon in Windows Explorer you can use the DWGicon shell extension (see http://www.cushat.co.uk/fw/di/ [URL verified 9/2004]).

ACADLTADTMapMDT

* CAD

8.1.2001 71088x FAQ

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applies to: AutoCAD · AutoCAD LT · AutoCAD Architecture · AutoCAD Map · Mechanical Desktop ·

See also:
Tip 9685:	DWG thumbnail is not displayed with some files. Why?
Tip 9561:	iLogic macro for exporting IDW/DWG Inventor drawings to DXF.
Tip 9528:	Using Autodesk Fusion 360 as a CAD converter.
Tip 9398:	CAD formats supported in Inventor 2014 (import/export).
Tip 9371:	How to convert 3D DWF back to an editable CAD model?

Selected tip: How to transfer your Plot style table to Excel?

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