Convert IGES to STEP

Free IGES to STEP converter. Runs in your browser, so the file never leaves your computer. Preview the model, then download the STEP.

Good to know

The surfaces are sewn into solids where they close. Open IGES surfaces stay surfaces in the STEP.

How it works

  1. 1Drop your IGES file in the box above. It is read in your browser.
  2. 2Check the preview.
  3. 3Download the STEP. It opens in Fusion, SolidWorks, and Onshape.

What carries over

Shape
Kept
Colors
Kept
Materials
Dropped
Units
Kept
Separate parts
Kept
Exact curves
Kept

About IGES

IGES (Initial Graphics Exchange Specification). The 1980s CAD exchange format that STEP replaced. Still common from older CAM and aerospace systems. Often surfaces rather than closed solids.

Units: Explicit. Up axis: Z. Opens in Fusion, SolidWorks, Rhino, and FreeCAD.

About STEP

STEP (ISO 10303 STEP). The ISO standard for exchanging exact CAD solids. Faces are true curves, not triangles, so another CAD program can edit and dimension them.

Units: Explicit. Usually millimeters. Up axis: Z. Opens in Fusion, SolidWorks, Onshape, FreeCAD, and Inventor.

Questions

Is the IGES to STEP converter free?
Yes. You get 3 runs a month without an account. Sign in with your email, free, and there is no limit.
Is my file uploaded?
No. The file is read and converted in your browser. It never reaches our servers.
Will the STEP keep colors and materials?
Where the IGES has them, yes.
What units is the STEP in?
IGES: Explicit. STEP: Explicit. Usually millimeters. The converter does not guess. Use the scale option if the size looks wrong.
How do I open a STEP file?
Fusion, SolidWorks, Onshape, FreeCAD, and Inventor all open STEP.

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