STL to 3MF converter
STL is what every slicer and 3D printer expects. 3MF is the modern print format: units, colour and materials in one file. Drop a STL in and a 3MF comes back, usually in seconds.
Drag and drop a file here
or click to browse from your device
How it works
- Drop the file inDrag it onto the box, or click to pick it from your device.
- Check the output3MF is already selected. Change it if you want something else.
- Press convertThe file is converted here and comes back as a download.
About the formats
STL
STL is what every slicer and 3D printer expects.
3MF
3MF is the modern print format: units, colour and materials in one file.
Frequently asked questions
Does it cost anything?
No. It runs on open-source tools on one server, with no paid tier and no upload to a third-party service.
How long is the file kept?
An hour after the job finishes, then it is deleted. The row stays in History so you can run it again.