Free Online OBJ to STL Converter

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

How to Convert your OBJ to STL Online?

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

Upload your OBJ file

Upload your OBJ file

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

Download your STL

Download your STL

Click the download link to receive your STL file.

File format information for OBJ and STL

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.

OBJ Converter Capabilities

Our OBJ 3D Model/Mesh tool does not support any color material data contained within OBJ files so the converted file will not contain any color information.

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

Our 3D conversion tool does not support color/material information in STL files so your file will not contain any color information.

Information for converting from OBJ to STL

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

Frequently Asked Questions

How can I convert my OBJ file to STL?

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

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

We aim to process all OBJ to STL 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 OBJ to STL conversion?

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