OBJ to USDZ converter: the materials and the textures kept
Drop an .obj and get one .usdz file, converted in Blender on our server. The trip keeps the materials and the textures; nothing the source holds is lost on the way. Free, no account, nothing to install.
How do I convert OBJ to USDZ?
Drop the file on this page, wait while the server converts it, and download one .usdz file.
- 1Choose an .obj, or a zip of the folder that holds it with its textures. Files up to 50 MB.
- 2The converter opens it in Blender on our server and writes USDZ. Most files take under a minute; the page shows the result in 3D when it is done.
- 3Download one .usdz file. The upload and the result are deleted 3 days later.
- In:
- .obj (zipped with .mtl and images)
- Out:
- one .usdz file
- Keeps:
- the materials and the textures
- Cost:
- free, no account
What survives the trip
An OBJ never travels alone: the materials are in a sibling .mtl and the images beside that. Upload a zip of the folder and the materials come through; upload the .obj alone and the mesh arrives grey.
The result is a .usdz package: Y-up, metres, a default prim, UsdPreviewSurface materials with the textures inside, uncompressed as the specification requires. It is checked as a package, not on a phone; try it on your own device before shipping it.
OBJ and USDZ do not hold the same things, and the page says so before you upload: the trip keeps the materials and the textures, and nothing the source holds is lost on the way. USDZ is what AR Quick Look on iPhone and iPad, and USD pipelines, read.
What this conversion cannot do
Measured on real files, not assumed. Everything below is a property of the formats or of the pipeline, and knowing it beforehand is cheaper than discovering it in your 3D tool.
The .mtl and the images have to come along
An .obj carries geometry and texture coordinates and nothing else; the materials live in the .mtl it names, and the images in files the .mtl names. Zip all three together. An .obj on its own converts, but to an untextured mesh.
Materials become UsdPreviewSurface
That is the one material model AR Quick Look reads: base colour, metallic, roughness, normal, opacity, emission. Toon shading, glTF extensions such as transmission, and custom node graphs have no place in it and arrive as a plain surface.
Uploads stop at 50 MB
A larger file is refused before anything is uploaded. Decimate a dense mesh or shrink the textures in your 3D tool first; neither changes the format.
Frequently asked questions
Why is the result grey?
The .obj was uploaded without its .mtl and images, or the .mtl names images that were not in the zip. Put the .obj, the .mtl and the image files in one zip and upload that.
Will this open in AR Quick Look?
It is written the way Apple's viewer expects: a .usdz package, Y-up, metres, UsdPreviewSurface materials, textures inside. We check the structure of the file, not a device, so try it on your own phone. The usual failures are very large textures and materials the preview surface cannot express.
Is anything uploaded, and for how long?
Yes: the file you drop goes to our server in New York, is converted there, and both the upload and the result are deleted 3 days after the conversion. Nothing is shared with anyone.
Can I look at the OBJ first?
Yes, without uploading anything: the OBJ viewer draws it in your browser. Open the OBJ viewer →
Can this become a VTuber avatar?
Not as it is: an avatar needs a skeleton, skin weights and a face that moves, and an .obj has none of them. Rig and texture the model in Blender first, then convert the rigged file to VRM.
The other format pairs
All 50 are free, all run the same pipeline, and all say what they drop.
OBJ to GLB
OBJ in, GLB out, free: one file.
USDZ to GLB
USDZ in, GLB out, free: one file.
USDZ to FBX
USDZ in, FBX out, free: one file.
USDZ to OBJ
USDZ in, OBJ out, free: zipped with its files.
GLB to USDZ
GLB in, USDZ out, free: one file.
FBX to USDZ
FBX in, USDZ out, free: one file.
OBJ to STL
OBJ in, STL out, free: one file.
OBJ to PLY
OBJ in, PLY out, free: one file.
OBJ to DAE
OBJ in, DAE out, free: zipped with its files.
STL to USDZ
STL in, USDZ out, free: one file.
PLY to USDZ
PLY in, USDZ out, free: one file.
DAE to USDZ
DAE in, USDZ out, free: one file.
USDZ to STL
USDZ in, STL out, free: one file.
USDZ to PLY
USDZ in, PLY out, free: one file.
USDZ to DAE
USDZ in, DAE out, free: zipped with its files.
OBJ to 3MF
OBJ in, 3MF out, free: one file.
GLB to OBJ
GLB in, OBJ out, free: zipped with its files.
FBX to OBJ
FBX in, OBJ out, free: zipped with its files.
STL to OBJ
STL in, OBJ out, free: zipped with its files.
PLY to OBJ
PLY in, OBJ out, free: zipped with its files.
DAE to OBJ
DAE in, OBJ out, free: zipped with its files.
3MF to OBJ
3MF in, OBJ out, free: zipped with its files.
Only want to look at the file? GLB viewer, FBX viewer and OBJ viewer all run on your own device — nothing is uploaded.
Is your model going into VTubing?
An .obj is a surface without a skeleton, so no converter can make a VRM avatar out of it directly. Rigged and textured in Blender, the same model converts to VRM on the FBX to VRM converter, with the bones mapped onto the VRM humanoid.
Open the VRM converter