Free Online 123DX to OBJ Converter

Use our free-to-use 123DX to OBJ CAD to 3D model converter to effortlessly convert your 123DX files. Our converter can apply extrusion to your 123DX files, which can then be edited in most 3D editing applications. As our 123DX to OBJ tool is able to batch convert your files, you can upload a maximum of 20 files at a time.

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

Please note: Your 123DX file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted 123DX file before this time.

To begin, click the button above and select your 123DX CAD files. Once selected, your CAD files will be added to the conversion list. From here, you will be able to set any conversion properties, such as extrusion depth, by clicking the button. When you are ready, click the Convert button to convert your files.

How to Convert your 123DX to OBJ Online?

Here are two simple steps to convert your 123DX to OBJ using our fast and free 123DX converter tool.

Upload your 123DX file

Click the "Upload a 123DX File" button, then select a 123DX to upload. The maximum file size is 100MB.

Download your OBJ

Click the download link to receive your OBJ file.

Frequently Asked Questions

How can I convert my 123DX file to OBJ?

First, click the "Upload..." button and select your 123DX file to upload. Your 123DX file will be uploaded to our servers. When the 123DX to OBJ conversion has completed, you can download your OBJ file right away.

How long does it take to convert my 123DX to OBJ?

We aim to process all 123DX 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 123DX 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.

File format information for 123DX and OBJ

Extension123DX
Full NameAutodesk 123D
TypeCAD
Mime Typeapplication/octet-stream
FormatBinary

The 123D Design application uses the 123DX file format, which is a Computer Aided Design (CAD) graphics format. Developed by Autodesk, 123D Design was intended as an easy-to-use CAD application aimed at entry-level and enthusiast designers.

123D Design has since been retired, with users moving to other CAD applications such as Fusion 360. The 123DX format is a ZIP container format containing various data files describing the properties of the various objects within the CAD file. Elements such as lines, curves, and 3D volumes such as cubes and cylinders are all stored within human-readable text files wrapped within a compressed ZIP file containing the 123DX file extension.

As mentioned, the 123D Design software has been superseded by other, more capable CAD software, meaning support for editing the file is limited. The original 123D design software can still be downloaded and contains numerous options to export data to standard formats, such as STEP and STL.

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

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