Free STEP (.step, .stp) to USDZ (.usdz) converter — running entirely in your browser. No upload, no signup, no file limits: your files never leave your device.
STEP · IGES · BREP · STL · OBJ · PLY · GLB · glTF · 3MF · COLLADA · AMF · FBX · 3DS · OFF · LAS · PCD · XYZ · PTS
STEP is the industry-standard exchange format for parametric CAD data. It stores exact boundary-representation (B-rep) geometry — true curves and surfaces rather than triangles — which makes it the preferred way to move solid models between CAD systems like SolidWorks, Fusion 360, Inventor, CATIA and NX without losing precision.
USDZ packages Pixar’s Universal Scene Description into a single uncompressed ZIP for Apple’s AR Quick Look. An iPhone or iPad can open a USDZ link directly into augmented reality from Safari — no app required — which makes it the format for AR product previews on Apple devices.
| STEP | USDZ | |
|---|---|---|
| Geometry | Exact B-rep solids & surfaces | USD mesh scenes |
| Units | Yes, embedded | Meters (implied) |
| Colors & materials | Per-part colors | PBR materials |
| Animations | No | Yes |
| Typical use | CAD exchange between engineering tools | Apple AR Quick Look |
Yes — free with no accounts, no watermarks and no file-size limits. Conversion runs on your own machine, so there are no server costs behind it.
No. The converter runs entirely in your browser using WebAssembly. Your .step file never leaves your device, which makes it safe for confidential designs.
STEP stores exact CAD surfaces, which are tessellated into triangles at a quality you choose — from fast drafts to near-exact precision meshes. Preview the result in the built-in 3D viewer before downloading.
Yes. Every converted model opens in the built-in 3D viewer with an assembly tree, display modes and section views, so you can inspect the result first.
STEP stores exact boundary surfaces, but every output available here is a triangle mesh. Tessellation is irreversible: feature history, constraints and analytic curves cannot be recovered from the converted file. The USDZ result contains the converted geometry and flat colors, but no source textures, rigs or animation tracks.
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