Free Online OBJ Converter

This is our free-to-use OBJ file conversion tool that can be used to convert your OBJ file into any number of other 3D model formats. Our OBJ converter will extract the 3D model geometry contained within your file and accurately convert it to the desired format without any loss of detail. Our OBJ converter also has a batch processing mode whereby you may upload up to a maximum of 20 files to be converted in one go.

Drag and drop your files here to upload or click the button above.
A maximum of 20 files can be converted at once.

Please note: Your OBJ file file, when uploaded to our server, will be deleted 15 minutes after upload. Please download your converted OBJ file file before this time.
Our OBJ conversion tool supports converting to the following file types:

Our OBJ converter will extract the vertices, faces, and other geometric data that forms the structure of your 3D model and convert it to the requested format. If the selected format supports external texture files, these can be uploaded along with your OBJ model file, and these will be processed accordingly.

OBJ file information

Full NameWavefront
Type3D Model
Mime Typetext/plain

An OBJ file is a text-based file format used for the storage of 3D model data. The format was developed in the 1980s by Wavefront Technologies as a means to store the geometric mesh data associated with a 3D model. It has garnered widespread support in the following years, and you will find options to load from and save to the OBJ format in most modern 3D modeling applications.

As OBJ files are essentially text files, they can grow quite large when working with large and detailed 3D models.

Mesh Geometry

Within a 3D OBJ file are lists of vertices, mesh faces, face normals, texture coordinates, and more. The vertices, normals, and texture coordinates are stored in a continuous list and are indexed referenced within a separate list of mesh faces, ensuring optimal use of space within the file. A mesh face may contain three or more points, each of which can use a unique vector normal and texture coordinate.


OBJ files support surface materials within the 3D model, and these materials are defined using an external materials file that comes with the extension MTL. Within this file are the materials along with their visual properties, such as ambient, diffuse, and specular lighting values and textures.

Texture files are provided as separate files and can come in many different formats, with the most common being PNG and JPG. If a material contains a texture, the filename is referenced within the material definition. Materials support different types of textures, such as diffuse, specular, bump mapping, and more.

OBJ Converter Capabilities

As materials containing texture and color information are both supported by the OBJ format, our tool will do its best to include these materials, including any texture files, in the converted file.

Popular OBJ Converter Tools

How to Convert your OBJ file Online?

Here are 3 simple steps to convert your OBJ file using our free OBJ file file conversion tool.

Upload your OBJ file

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

Select file type

Select the file type to convert your OBJ file to using the list of available types.

Download your file

Click the download link to get your converted file.

Frequently Asked Questions

Is it free to use the OBJ file conversion tools?

Yes, there is no cost to using our conversion tools.

Are there any OBJ file conversion limits?

At this time, we do not have any usage limits other than the maximum of 20 file uploads per conversion run.

How long do I need to wait for my converted file to be completed?

The size of your OBJ file will affect processing times, so please allow for this. For smaller files of around 5MB, our tools will aim to have it completed within a few seconds.

How is my OBJ file converted, whats involved?

When you upload your file to our site, we use a set of bespoke conversion components to, as accurately as possible, convert your file to the requested format. When the conversion is complete you will see a download link with which to retrieve your converted file.

Is the OBJ format suitable for 3D printing?

No. Most 3D printing slicer software will not support the OBJ format. It is recommended to convert your OBJ file to the STL format if you wish to 3D print it.

Is it safe to convert my OBJ on

Yes, your files are automatically deleted from our servers after 15 minutes.

Can I convert my OBJ file using Android, iOS, Mac OS or Linux?

Yes, you can. Our OBJ file converters only require a modern web browser to convert your files.

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