Free STL converter

Convert 3MF to STL

Free, no account needed. Pick your 3MF file and download it as an STL, the format most slicers and our instant print quote use.

3D to STL converter
Drag and drop a 3D file here, or
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How it works

1. Pick your file

Choose your 3MF file from your computer or drop it on the converter.

2. Convert

The shape is read and saved as an STL, which downloads to your device.

3. Download or print

Keep the STL, or upload it for an instant quote and a maker in our community prints it.

About Intagly

Community-based 3D printing

Intagly connects you with a community of independent makers who own 3D printers. Instead of one central print farm, your part is printed by a maker in the network and delivered to your door.

Need a model first? Our 3D design engineers can create or fix one with you in a chat.

How distributed manufacturing works

3MF to STL FAQs

What is an STL file?

An STL file describes the surface of a 3D object as a mesh of triangles. It stores the shape only, with no color, material or units, which is why almost every slicer and 3D printing service accepts it.

What is a .3mf file?

A .3MF file is a type of 3D printing file. It contains information about the shape, color, and materials of a 3D object. It’s used by 3D printers to create detailed and accurate prints.

How is .3MF different than STL?

A .3MF file can store more details than an STL file. It includes information like color, material, and textures, while STL files only store the shape of the object. This makes .3MF better for complex 3D printing projects.

How does the conversion work?

Pick your file and the converter reads its geometry and saves it as an STL, which downloads to your device. STL stores shape only, so colors, materials and textures are not carried over. CAD files such as STEP are turned into a triangle mesh.

My conversion failed. What now?

Some files contain no solid geometry or are damaged, and can't be converted. Chat with a 3D design engineer who can repair or rebuild the model.

Can I get my model 3D printed?

Yes. Upload the STL for an instant quote. A maker in our community prints it and it is delivered to your door.

What if I want to change my 3D model?

Chat with a 3D design engineer: describe the change and get a quote for the work.

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