Free Online STL to OBJ Converter

Please note: Your STL file, once uploaded to our server will be deleted 1 hour after upload so please download your converted STL file before this time.

How to Convert your STL to OBJ Online?

Here are 2 simple steps to convert your STL to OBJ using our fast and free STL converter tool.

Upload your STL file

Upload your STL file

Click the "Upload a STL File" button, then select a STL to upload. The maximum file size is 100MB.

Download your OBJ

Download your OBJ

Click the download link to receive your OBJ file.

File format information for STL and OBJ

ExtensionSTL
Full NameStandard Triangle Language
Type3D Model
Mime Typeapplication/vnd.ms-pki.stl
FormatText
Opens WithBlender, 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.

STL Converter Capabilities

When converting 3D Model/Mesh files using our [ey] converter we will attempt to convert color materials into a suitable format for use in the converted file.

ExtensionOBJ
Full NameWavefront
Type3D Model
Mime Typetext/plain
FormatText
Opens WithMeshLab, 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.

Information for converting from STL to OBJ

Your STL file will be converted to a OBJ file using our unified 3D model and mesh conversion tool. Our STL 3D tool performs accurate conversions of 3D elements such as vertices, faces, normals and relevant material information. As STL supports color materials and OBJ does not, our tool will not attempt to transfer any color information, your final 3D model will contain geometry data only.

Frequently Asked Questions

How can I convert my STL file to OBJ?

First click the "Upload..." button, select your STL file to upload. Your STL file will be uploaded to our servers. When the STL to OBJ conversion has completed, you can download your OBJ file straight away.

How long does it take to convert my STL to OBJ?

We aim to process all STL to OBJ conversions as quickly as possible, this usually takes around 5 seconds however this can be longer for certain files, so please be patient.

How accurate is the STL to OBJ conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development with new features being added every week.