Convert IGS files online for free
The converter easily converts your IGS file to various formats - free and online. No Blender or extra software needed.
The converter also works in reverse, so you can convert other Cad formats to IGS with high quality output.
The .IGS file (often interchangeable with IGES) is a legacy vendor-neutral format defined by the Initial Graphics Exchange Specification. It was the industry standard for transferring 2D and 3D wireframe models, surface geometry, and circuit diagrams between disparate CAD systems like SolidWorks and AutoCAD before modern formats took over.
While .IGS files are universal, they come with significant technical drawbacks for modern workflows. Because the format is ASCII-based (text), files are often bloated and slow to parse compared to binary counterparts. More critically, .IGS is strictly a surface format; it does not contain the solid modeling history or feature trees (like extrusions or holes) found in native files. Users often encounter "healing" issues where surfaces fail to stitch together, resulting in gaps that make the model unusable for simulation or manufacturing.
To overcome these limitations, conversion is often necessary. For high-fidelity engineering exchange, converting to STEP (ISO 10303) is recommended as it handles solids better. For 3D printing, users must convert .IGS to mesh formats like STL or OBJ. For simple viewing without expensive CAD licenses, converting to PDF or GLB (for web) is ideal.
Convert.Guru analyzes your IGS file, detects the exact format, and lets you read the text inside.
Users also converted IGES, STP, 3D, IGS-2, SLDPRT, STEP, STL, X_T, PRT, ZIP, LGSX, IPT and U3D files.
If you want to convert IGS file to STEP, STL, DWG, DXF, PDF, OBJ, STP, FBX, DAE, 3DS, MAX or BLEND, you can use SolidWorks or similar software from the "Neutral CAD Data Exchange" category. In the File menu, look for Save As… or Export….
To convert DWG, DAE, X3D, IGES, WRL, JT, SKP, 3DS, 3DM, OBJ, STEP or FBX files to IGS, try SolidWorks or another comparable tool in the "Neutral CAD Data Exchange" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our IGS converter.