STP → IGES

Convert STP to IGES

Convert STP to IGES without losing precision. The exact surfaces and solids are passed straight across, so nothing is turned into triangles.

  • Exact surfaces kept, no triangles
  • Volume and dimensions identical
  • Runs on your computer: nothing is uploaded
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Drop an STP file or
Files stay on your computer.
Done

How to convert STP to IGES

  1. Add your STP file

    Drop it on the converter above or click browse. It opens in your browser, so nothing is uploaded.

  2. Check the format is IGES

    IGES is already selected. You can switch to any other output from the menu.

  3. Convert and download

    Click Convert and your IGES file is ready in seconds. Download it straight away.

What is STP?

STEP stores exact CAD geometry: true planes, cylinders, cones and freeform surfaces joined into solids. It is the standard way to move parts between CAD systems such as SolidWorks, Fusion 360, Inventor, CATIA and FreeCAD.

Full name
ISO 10303 (Standard for the Exchange of Product Data)
Type
Exact CAD geometry
Used in
SolidWorks, Fusion 360, Inventor, CATIA, FreeCAD, Onshape
Strength
Exact, editable geometry that every CAD program can open.
Limits
Not used directly by slicers or game engines; it has to be meshed first.
More about STP

What is IGES?

IGES is an older CAD exchange format that stores exact curves and surfaces. Many machines, CAM systems and older CAD packages still expect it.

Full name
Initial Graphics Exchange Specification
Type
Exact CAD geometry
Used in
Mastercam, Rhino, SolidWorks, CATIA, older CAM software
Strength
Accepted by legacy CAD and CAM tools.
Limits
Older than STEP; solids are often stored as loose surfaces.
More about IGES

Good to know

Both STP and IGES store exact CAD geometry, so this is a direct translation using the OpenCascade CAD kernel. We check the converted part has the same volume as the original.

Related conversions

STP → STLSTP → BREPSTP → OBJSTP → FBXSTP → GLBSTP → glTFSTL → IGESSTEP → IGESOBJ → IGESFBX → IGESGLB → IGESglTF → IGES

Questions

Do I lose any accuracy converting STP to IGES?

No. The exact geometry is translated directly; it is never turned into a mesh.

Are colours and assembly structure kept?

Geometry is kept exactly. Colours and assembly names may not carry over between CAD formats.

Are my files uploaded?

No. Conversion runs in your browser and your file stays on your computer.