Files with igs extension can be typically found as 3D graphics data saved in International Graphics Exchange Standard (IGES) format used for data exchange.

Detailed description

Software that open iges file

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IGES file extension - IGES 3D exchange format

What is iges file? How to open iges files?

File type specification:

3d graphics, CAD-CAM-CAE file type icon 3d graphics, CAD-CAM-CAE file type

The iges file extension is commonly used for files in International Graphics Exchange Standard (IGES), an ANSI-approved standard format used with 3D wire frame models originally created in 1979.

One must be very careful when sourcing CAD files from all of today's modern CAD packages, as most/many of them export the long-obsolete "Surfaces NURBS" variation (few people know these differences). There are 3 primary versions of IGES: the 1980's "Bounded Surfaces", the 1990s "Surfaced NURBS" and the 2000's modern "BREP Manifold Solids". One should only export an IGES file in the latter "BREP Manifold Solids" version of IGES. If you try to convert via "Surfaced NURBS" (which has no BREP topology) then the model will be exploded into thounsads of individual NURBS patches, leading to patch cracking, flipped or randomly oriented surfaces, inverted vertex normals (for smoothing) and black banding effects. People on forums often complain that IGES is not a good CAD conversion file format but that is only because they are using the wrong version and/or poor 3D IGES importers. Note: IGES files are limited to a file size of 2GB due to their limited internal numeric range. 

The igs file contains IGES 2S or 3D CAD model.

MIME types:

Updated: April 14, 2024

The default software associated to open iges file:

SolidWorks icon

SolidWorks Corporation logoSolidWorks  Microsoft Windows software

Company or developer:
SolidWorks Corporation

A popular is 2D and 3D CAD (computer-aided design) and CAE (computer-aided engineering) construction software for Microsoft Windows developed by SolidWorks Corporation.

SolidWorks is distributed in three distributions: Solidworks Premium, Solidworks Professional and SolidWorks Standard.

AutoCAD icon

Autodesk, Inc. logoAutoCAD  Microsoft Windows software

Company or developer:
Autodesk, Inc.

A CAD designing software with the powerful, flexible features. It is a CAD development platform that provides tools to build custom AutoCAD-based software products for specific markets. The default file formats using by AutoCAD are: DWG and DXF.

Help how to open:

Usually *.igs files can be imported to several CAD programs such as CATIA or Autodesk AutoCAD (might require plugin).

How to convert:

Most of the modern CAD/3D modeling programs support IGS/IGES format.

Find conversions from iges file:

iges to dwg

iges to dxf

iges to fbx

iges to igs

iges to pdf

iges to stl

iges to svg

Find converter to iges file type:

catpart to iges

dwg to iges

dxf to iges

ipt to iges

prt to iges

sldprt to iges

stl to iges

List of software applications associated to the .iges file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open iges file, edit iges file, convert iges file, view iges file, play iges file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting iges files.

Software that open iges file - IGES 3D exchange format

Programs supporting the exension iges on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open iges file action.

Microsoft Windows:

Main software associated with iges file by default:
AutoCAD small icon AutoCAD
Other suggested software:
Creo Parametric small icon Creo Parametric
Autodesk Inventor small icon Autodesk Inventor

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