Free browser tools · Your files stay on your device
OBJ to STL
Convert OBJ files to STL on your device with a preview before download.
For the established general-purpose tool, visit our 3D file converter. This workspace provides additional local controls.
Open the local workspace
Choose your model, or try a built-in example. Your files stay on your device and processing uses no AI credits.
OBJ · No sign-up required
How to use this tool
Step 1
Open the source and its companion files
Step 2
Check dimensions and choose the output
Step 3
Inspect and download the converted model
Supported workflow and limitations
STL contains geometry only and does not retain color, textures or animation.
Frequently asked questions
Are files uploaded to Magic3D?
Files selected on this page are parsed and processed in your browser. Platform previews are read from their existing preview address. No AI generation is triggered by opening a model.
Does this use credits or require an account?
Local viewing, conversion and estimates use no Magic3D AI credits and need no account. AI model generation remains a separate service.
Which files should I select?
This task accepts OBJ. When a file references separate BIN buffers, MTL materials or texture images, select all of them together. Total selected size is limited to 100 MB.
What are the limitations?
STL contains geometry only and does not retain color, textures or animation.