How do I open a .IGS file on Windows or Mac?

You can open .IGS files using SolidWorks, Autodesk Fusion 360, FreeCAD, Rhino 3D, CATIA. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .IGS to a standard format in your browser.

Is a .IGS file safe to open?

This format carries a safety rating of Low Risk. Identical to .IGES format

Can I convert a .IGS file to other formats?

Yes! .IGS can be converted to formats such as .STEP, .STL directly in your web browser.

What should I do if a .IGS file is corrupted or won't open?

If your .IGS file displays an invalid header or signature error, check its magic bytes hex header (Varies) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

How do I open .IGS files?

You can open .IGS files using SolidWorks, Autodesk Fusion 360, FreeCAD, Rhino 3D, CATIA.

CAD & 3D • MIME: application/iges

.IGS – IGS File Format

Q: What is a .IGS file?

A .IGS file is a IGS File Format associated with CAD & 3D. IGS is the three-letter file extension shorthand for IGES, storing vector wireframes and NURBS surface definitions for CAD model exchange.

IGS is the three-letter file extension shorthand for IGES, storing vector wireframes and NURBS surface definitions for CAD model exchange.

Primary Category CAD & 3D

MIME Type application/iges

Magic Bytes Signature Varies

Security Risk Rating Low Risk

Recommended Software to Open .IGS

SolidWorks

windows, mac, linux • Free

Autodesk Fusion 360

windows, mac, linux • Free

FreeCAD

windows, mac, linux • Free

Rhino 3D

windows, mac, linux • Free

CATIA

windows, mac, linux • Free