STL to 3MF Converter

Convert STL to 3MF online quickly and easily. Just upload your file, convert it, and download the 3MF in seconds.

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STL is the standard file format for 3D printing: a model described as a surface of triangles, without colours or textures.

3MF is the modern 3D printing format: one file with the model, its units, colours and print settings, replacing STL in current slicers.

Upload your STL file
Drag and drop your STL file, click 'Select Files' to upload from your device, or import directly from Dropbox, Google Drive, OneDrive, or paste a URL.
Choose 3MF as output format
The converter is preset to 3MF, but you can select any other output format before converting.
Adjust settings (optional)
If you like, tweak output options such as resolution, quality, or compression before converting.
Convert the file
Click the 'Convert' button. The conversion takes only a few seconds.
Download your converted file
Download the converted file to your device, or save it directly to Google Drive, Dropbox, or OneDrive.