Free Online OBJ to CTM Converter

You can use our OBJ to CTM conversion tool to quickly convert your 3D model (with optional texture files) for free. You may upload up to 20 files at one time, and our batch OBJ to CTM converter will process each 3D model and present you with a download link for each file once completed.

Select File(s)

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your OBJ file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted OBJ file before this time.

Our 3D model OBJ to CTM tool will load your OBJ file and, where supported, attempt to extract all the relevant 3D features, such as geometry, textures, and animations. To access the 3D conversion configuration options, click the button when you have selected your files. The current options support the ability to voxelize your 3D model and more.

How to Convert your OBJ to CTM Online?

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

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 CTM

Click the download link to receive your CTM file.

Frequently Asked Questions

How can I convert my OBJ file to CTM?

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

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

We aim to process all OBJ to CTM 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 CTM conversion?

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

File format information for OBJ and CTM

Extension	OBJ
Full Name	Wavefront
Type	3D Model
Mime Type	text/plain
Format	Text
Opens With	MeshLab, CAD Assistant, DAZ Studio

The OBJ file format is a 3D graphics file format used to define complex 3D models, including geometry, materials, and textures. OBJ files are text files, making them human-readable and easy to modify by hand. The downside to this ease of readability is that the files can become rather large when dealing with large or complex 3D models.

As mentioned, the OBJ format stores not only 3D model geometry but also materials and textures. These materials are usually defined in a separate file with the MTL file extension and specify geometry rendering details such as diffuse and specular colour, transparency, and much more.

The OBJ material file can also reference external texture files. These are usually JPEG or PNG files; however, these can be older formats, such as TGA. Where materials are used, the OBJ file will also contain material names preceding the geometry faces they should be applied to. If textures are referenced, the geometry will also contain texture coordinates (UV) for each vertex.

OBJ Converter Capabilities

When converting 3D model or mesh files using our OBJ converter, we will attempt to convert colour materials into a suitable format for use in the converted file.

Extension	CTM
Full Name	OpenCTM
Type	3D Model
Mime Type	application/x-ctm
Format	Binary

CTM Converter Capabilities

When converting your OBJ to CTM, our tool will attempt to accurately convert any colour or material information.

Information for converting from OBJ to CTM

Your OBJ file will be converted to a CTM 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. As both OBJ and CTM support colour material information, our tool will also attempt to convert the colour information.