OBJ → IGS · Windows

Convert OBJ to IGS

Convert OBJ 3D models to IGS without expensive CAD software. reaConverter handles batch conversion offline with consistent output.

Manual OBJ to IGS conversion wastes hours. reaConverter automates the process — just add files and click Convert. Everything happens offline on your computer. No uploads, no cloud risks. Manufacturing teams use it to share models across departments.

.obj.IGS
4.8

Converting files since 2001

Runs offline — nothing uploaded

Read what our users say →

How to Convert Multiple .obj Models to .igs?

1. Download and Install reaConverter

reaConverter is a standalone Windows app — download, install, and start converting OBJ files in under two minutes.

2. Load your OBJ files

Open reaConverter and add your OBJ files. You can load individual files, entire folders, or even nested subfolders.

Drop your OBJ files into the window or use File menu to browse and select folders.

Load your OBJ files into reaConverter

3. Select IGS as output format

Choose IGS as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select IGS as output format

4. Start OBJ to IGS conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your IGS files in the output folder. Click 'Show converted files' to open it directly.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your OBJ files into IGS without 3D or CAD software - all models processed on your PC for maximum privacy and speed.

Technical note

OBJ to IGS: what carries over and what does not

OBJ stores a surface made of triangles, while IGS is built for exact solid geometry. The conversion has to derive surfaces from that triangle mesh, so the result is faithful to the shape but is not the same thing as a parametric model with clean features and editable dimensions. OBJ holds bare numbers with no unit, and IGS has to state one, so the conversion has to assume it. If the OBJ was exported in inches or metres, the result is off by that same factor. Measure one known dimension after conversion.

3D Workflow

From mesh to CAD format

reaConverter converts OBJ models to IGS for CAD, quoting and archiving, a whole folder at a time.

  • Get each model as one IGS file that SolidWorks, Fusion or FreeCAD can open
  • Convert a whole model library in one run with the same settings
  • Pick up new models automatically with Watch Folders
3D model conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 24, 2026
Finally an app that actually opens my weird files! Saves me from format frustration daily.
Kyle Brooks
Kyle Brooks
Happy User
This converter delivers exceptionally quick format conversions with reliable results every time.
Brian White
Brian White
Happy User
Security was our top concern when evaluating file conversion tools. reaConverter’s offline mode and role-based access controls let us lock it down for sensitive environments. No unexpected network calls or bloat — just clean, fast conversions. Even passed our pen-testing scans without a hitch.
Marcus White
Marcus White
Healthcare IT
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer

FAQ

OBJ to IGS Conversion

Can reaConverter convert OBJ to IGS?

Yes! reaConverter instantly converts .obj to .igs with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert OBJ models directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, 3D models among them. For OBJ to IGS it replaces the round trip through Blender, a CAD program or an upload form: add the files, pick the output format, and the whole batch converts offline. Engineers, 3D printing shops and product teams use it to move models between CAD, printing, web and documentation formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert OBJ to IGS online?

If you only need to convert a few OBJ files to IGS format, feel free to try our free online free online OBJ to IGS converter — perfect for small batches with no installation needed!

How can I turn OBJ files into IGS on my computer?

The best way to change OBJs to IGSs on your PC is to install a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from OBJ to IGS.

How can I automate OBJ to IGS files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert OBJ files to IGS using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line obj to igs converter for batch processing.

What else can I do with reaConverter?

Convert vector imagesChange image DPIConvert whole-slide imagesResize photoConvert RAW photo formats

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Beyond format conversion

Batch conversion, editing, and processing across 800+ formats, from RAW and HEIC to DICOM, DWG, and PDF. Everything runs locally, with no cloud and no upload limits.

Free trial · Windows 10/11 · v8.0.253 · Files never leave your computer

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