Convert your 3D Wavefront OBJ to STL file that can then be sent straight to a 3D printer or if you prefer, opened in most 3D editing applications such as Blender and many more. Our tool works with all OBJ files and will convert all 3D geometry contained within the file to the Standard Triangle Language format also known as STL.
To convert your OBJ to STL, click the Upload button above and select the OBJ file to convert. Once selected, the file will be converted to a STL file and will ready for download shortly afterwards. For more information about the OBJ to STL conversion process including what 3D model file features are supported please see the conversion information section below for more information.
Here are 2 simple steps to convert your OBJ to STL.
Our tool will save all STL files in binary format. Optionally, our tool will allow you to save to the non-standard color STL format.
First click the "Upload..." button, select your OBJ file to upload. Select any configuration options. When the OBJ to STL conversion has completed, you can download your STL file straight away.
We aim to process all OBJ to STL conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.
We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.
Yes, of course! We do not store the OBJ file you submit to us. The resulting STL file, once created is deleted 15 minutes after upload and the download link will expire after this time.
Yes! Our OBJ to STL tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.
Yes. Although you can use an Ad Blocker, if you like our OBJ conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.
Our OBJ to STL converter will take most OBJ formatted 3D model files and attempt to read the geometry (usually vertices, faces and normals) and build an internal 3D model that can then be saved out in the STL format which is great for 3D printing and other 3D applications. As OBJ files use a simple text-based format making them easy to inspect and edit in a text editor they can be considerably larger than other 3D formats. Our tool supports OBJ files of up to 100MB in size. If your file is larger than this then please simplify your 3D model or reduce the the number of objects in the OBJ file.
| Extension | OBJ |
| Full Name | Wavefront |
| Type | 3D Model |
| Mime Type | text/plain |
| Format | Text |
| Open With | MeshLab, CAD Assistant, DAZ Studio |
The OBJ file format originally created by Wavefront Technologies and later adopted by many other 3D software vendors is a simple text-based file format for describing 3D model/geometry. This data can include Vertices, Faces, Normals, Texture Coordinates and references to external Texture files.
As the format is text-based it is relatively straight-forward to parse by 3D modelling applications. A downside of the text-based format is the files can be rather large compared to similar binary formats such as STL and compressed files such as 3MF.
Currently our tool does not support importing materials or color information from your OBJ file.
| Extension | STL |
| Full Name | Standard Triangle Language |
| Type | 3D Model |
| Mime Type | application/vnd.ms-pki.stl |
| Format | Text & Binary |
| Open With | Blender, MeshLab, CAD Assistant, DAZ Studio |
The STL file format has its roots in the 1980's and is the native file format for 3D Systems stereolithography CAD software. The format defines a triangulated mesh with vertices and faces and is a popular format for sharing 3D printable model files.
There were several formats that attempted to extend the STL format namely SolidView and VisCAM whose formats included limited 15-bit color information for each mesh face which is often ignored by most modern 3D software. The STL format can be either Text or Binary, our tools will support both formats.
The standard STL file format does not support colored faces or vertices or texture information. The STL file generated by the tool will contain only raw mesh/triangle data by default which is perfect for 3D printing.
The tool also has an option to save the file to one of the non-standard formats that support colored faces such as VisCAM and SolidView which is perfect if you want to further process the STL in software which supports these formats.
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