STP → USDZ

Convert STP to USDZ

Turn an STP CAD model into a USDZ mesh. Curved surfaces are meshed finely enough to stay smooth, and the part keeps its real size and orientation.

  • Fine, accurate meshing of curved surfaces
  • Real size and right way up
  • Runs on your computer: nothing is uploaded
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Drop an STP file or
Files stay on your computer.
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How to convert STP to USDZ

  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 USDZ

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

  3. Convert and download

    Click Convert and your USDZ 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 USDZ?

USDZ is Apple's packaged version of Pixar's Universal Scene Description. It is what iPhone and iPad use for AR Quick Look, and what Reality Composer and Vision Pro apps load.

Full name
Universal Scene Description, zipped
Type
3D scene (meshes, materials)
Used in
iPhone and iPad AR Quick Look, Reality Composer, Vision Pro, Blender, Omniverse
Strength
The format for augmented reality on Apple devices.
Limits
Little support in CAD and 3D printing software.
More about USDZ

Good to know

STP stores exact surfaces; USDZ needs triangles. We mesh each surface with a deviation of 0.05% of the part's size, which keeps holes and fillets smooth for printing and rendering.

USDZ is written in metres, so a 60 mm part shows as 6 cm in AR, exactly its real size.

Related conversions

STP → STLSTP → IGESSTP → BREPSTP → OBJSTP → FBXSTP → GLBSTL → USDZSTEP → USDZIGES → USDZOBJ → USDZFBX → USDZGLB → USDZ

Questions

Will curves look faceted?

No. Curved faces are meshed with a tight tolerance, so holes and fillets stay smooth.

Does it keep the size of my part?

Yes. The mesh has the same dimensions as the CAD model.

Are my files uploaded?

No. Everything runs in your browser.

Will the model show at the right size in AR?

Yes. USDZ is written in metres and we convert your units, so a 60 mm part appears 6 cm across on your iPhone or iPad.