cadformats.com

Your file never leaves your browser.

cadformats.com/convert/iges-to-usdz

.igesIGES→.usdzUSDZtessellated

Convert IGES to USDZ

Convert IGES to USDZ in your browser. The conversion runs on this page and the file never leaves your computer.

Drop your .iges file

up to 250 MB · .iges .igs

Free, and it opens in this tab. Nothing is uploaded, and there's no account to make.

Runs locally · nothing uploaded · the CAD kernel loads once you choose a file

Before you convert: what this keeps and what it destroys

Preserved

  • The shape, to within the tessellation tolerance
  • Overall dimensions and proportions
  • Watertightness, where the input is watertight
  • The unit, recorded in the file
  • Colour

Destroyed

  • Exact curves and surfaces, replaced by triangles
  • The feature tree and any parametric history

about .iges · about .usdz · just view it instead

Why people convert IGES to USDZ

An unusual request with one very specific use: showing a legacy surface part in augmented reality on an iPhone or iPad, at true size, to somebody who is not going to install CAD software.

It works, and the unit handling is better than most routes into USDZ, because IGES states its unit in the Global section instead of leaving it to be assumed. The geometry is converted into USD's metres from whatever the file declared.

Do not expect a solid. IGES surfaces tessellate into a mesh that may well be open, and AR Quick Look will happily display a shell with holes in it without mentioning them. That is fine for showing shape and proportion, which is what this format is for.

What you get

You get a binary USDZ file containing triangles. The reader tessellates supported surfaces or uses saved render meshes where required by the source format. Inspect curved faces at the intended output size. The triangle count depends on the model and the reader's meshing settings.

Carried across: the unit, recorded in the file, supported base or vertex colour.

The conversion runs in your browser. Your file stays on your computer and is not uploaded.

What to check afterwards

  • IGES declares its unit in the file. Check the output dimensions in the receiving application, especially when its import settings can override the unit.
  • Curves become facets. IGES stores exact surfaces, so a hole is a cylinder with a radius. USDZ stores triangles, so that cylinder becomes a many-sided prism. Look at curved faces in the result at the size you intend to make the part.

If you need something this conversion cannot give you

If you need editable CAD geometry, don't convert at all. Open the IGES file directly in FreeCAD, Fusion, Onshape or SolidWorks. Every mesh format destroys the exact surfaces, and no later conversion brings them back.

Going the other way

This site reads IGES but does not write it. For the reverse conversion, use an application that can export IGES.

How we know this conversion works

This pair was checked against 1 file from the test corpus on 2026-09-04. Each run parses its own output back in and compares the bounding box, the triangle count and, for closed solids, the volume against the input.

A pair that fails those checks doesn't get a page. That's why this site lists 120 conversions and not the several hundred a format-times-format grid would suggest.