Free Online MTL to OBJ Converter

Here is our free to use MTL to OBJ 3D model converter tool that will take your MTL file and convert it to the OBJ format ready for loading into your favourite 3D modeling package. Our 3D model converter supports batch processing of your files and can convert up to 20 MTL files at one time.

Select File(s)

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 MTL file file, when uploaded to our server, will be deleted 15 minutes after upload. Please download your converted MTL file file before this time.

The MTL to OBJ model conversion tool will analyse your MTL file and convert its 3D mesh data including vertices, surfaces and where applicable vector normals and texture coordinates to the OBJ format whilst maintaining the structural accuracy of your original MTL 3D model file.

File information for MTL and OBJ

Full Name	OBJ Material File
Extension	MTL
Type	3D Model
Mime Type	text/plain
Format	Text

MTL Converter Capabilities

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

Full Name	Wavefront
Extension	OBJ
Type	3D Model
Mime Type	text/plain
Format	Text

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 Converter Capabilities

As materials containing color information is supported by the MTL and OBJ formats, our tool will do its best to include this in the converted OBJ file.

How to Convert your MTL to OBJ?

Here are two steps to convert your MTL to OBJ using our free MTL converter tool.

Upload your MTL file

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

Download your OBJ

Click the download link to receive your OBJ file.

Frequently Asked Questions

How do I convert my MTL to OBJ?

First, click the "Select File" button and choose your MTL file. We will upload and convert your MTL file. Once the conversion from MTL to OBJ completes, use the provided link to download your OBJ file.

How long does it take to convert my MTL file to OBJ?

We aim to process all MTL to OBJ file conversions as soon as possible; this should take around 5 seconds; however, this may be longer for larger files.

Is the MTL format suitable for 3D printing?

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