Free STL converter

Convert OBJ to STL

Free, no account needed. Pick your OBJ 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 OBJ 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

OBJ 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 an .OBJ file?

An .OBJ file is a type of 3D model file. It contains information about the shape, textures, and surfaces of a 3D object. It’s commonly used for 3D modeling and animation.

How is an .OBJ file different from STL?

An .OBJ file can store textures and surface details, while STL files only store the shape of the object. This makes OBJ better for detailed 3D designs, while STL is simpler and ideal for 3D printing.

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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