How to Convert STL to USDZ — Quick & Free
Fast, instant STL to USDZ (AR QUICK LOOK) conversion. No signup required. Just drop your .stl file and get .usdz in seconds.
Batch Settings
About STL to USDZ (AR QUICK LOOK) Conversion
Short answer: yes, you can convert STL to USDZ online for free, and quality is well preserved with the right settings. Just upload your .stl file to CocoConvert, pick USDZ as the output, and click Convert. The whole process takes seconds.
Now for the details. STL stores 3D surface geometry as triangulated meshes — the standard for 3D printing. USDZ is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your STL file is decoded and re-encoded as USDZ. Converting STL to USDZ maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert STL to USDZ (AR QUICK LOOK)
- 1
1. Upload STL
Drop your .stl file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select USDZ
Choose .usdz from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .usdz file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert STL to USDZ (AR QUICK LOOK)
Your STL file is decoded and re-encoded as USDZ.
Your STL file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in USDZ format
The converted file is ready for download
Format Comparison
STL
.stl file
| Extension | .stl |
| MIME Type | model/stl |
| Category | 3D Model |
USDZ (AR Quick Look)
.usdz file
| Extension | .usdz |
| MIME Type | model/vnd.usdz+zip |
| Category | 3D Model |
Should You Convert STL to USDZ (AR QUICK LOOK)?
When to Convert
- ✓When you need a USDZ file
Frequently Asked Questions
Is STL to USDZ conversion free?
Yes. CocoConvert offers free STL to USDZ conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is STL to USDZ conversion?
Most files convert in 2–10 seconds depending on size. Large 3d model files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded STL file and the converted USDZ file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting STL to USDZ lose quality?
Converting STL to USDZ maintains high quality with CocoConvert's optimised encoder settings.
Can I convert USDZ back to STL?
Yes, CocoConvert supports USDZ to STL conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.