Free STL to 3MF
Convert an STL mesh to 3MF for Bambu Studio, PrusaSlicer or Cura.
Preview the model and its triangle count in your browser, then download.
- Runs locally
- Open a model
- Inspect it
- Download
- Free
- No sign-up
- Runs in your browser
- No watermark
3MF
Files are processed in this browser tab. This tool does not ask for an account or upload your file.
Use cases
Where it helps
Private files
Work on a photo, video or document before it is ready to share.
Quick fixes
Convert, check or tidy a file without installing software.
The next step
Download the result for print, publishing, or a PoYo generator.
Three steps
How to use Free STL to 3MF
Open a model
STL, OBJ, GLB, glTF, FBX and 3MF open in the browser.
Inspect it
Orbit, zoom and read the triangle count.
Download
Save the converted file or a PNG screenshot.
Features
What this tool includes
Runs locally
Files are processed in this browser tab. This tool does not ask for an account or upload your file.
Open a model
STL, OBJ, GLB, glTF, FBX and 3MF open in the browser.
Inspect it
Orbit, zoom and read the triangle count.
Download
Save the converted file or a PNG screenshot.
PoYo
Need a new image or video?
These free tools work on files you already have. To create an image, video or audio from a description, open a PoYo generator.
Free STL to 3MF FAQ
Do I need an account?
No. Open the page and use it.
Is my file uploaded?
No. Files are processed in this browser tab. This tool does not ask for an account or upload your file.
Is there a watermark?
No. PoYo adds nothing to the download.
Why does it pause the first time?
Some tools download an encoder or AI model on the first run. That download contains none of your file, and later runs are usually faster.
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Free to use, right in your browser.
Convert an STL mesh to 3MF for Bambu Studio, PrusaSlicer or Cura. Preview the model and its triangle count in your browser, then download.