Free Online 123DX Converter

Here is our fast and easy-to-use 123DX CAD file conversion tool. Our 123DX converter can read your 123DX file and convert it to other CAD or 3D model formats. Our 123DX converter also supports batch conversion, allowing you to upload as many as 20 123DX files at a time.

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 123DX file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted 123DX file before this time.
Our 123DX converter tool supports converting to the following file types: 3MF, ABC, BLEND, DAE, FBX, GLB, GLTF, IDTF, OBJ, OFF, PCD, PLY, SKP, STL, USD, VTK, VTP, WRL, X, X-Plane, X3D, XYZ, ZIP

To get going, click the button above and select the 123DX CAD files you want to convert. With the 123DX files selected, you can set the format you wish to convert your files to. On top of this, you can also configure the conversion tool by clicking on the button to reveal any 123DX format-specific options, such as extrusion depth.

How to Convert your 123DX file Online?

Here are 3 simple steps to convert your 123DX file using our fast and free 123DX file converter tool.

Upload your 123DX file

Click the "Select File(s)" button, then select an 123DX file to upload. The maximum file size is 100MB.

Select file type

Select the file type to convert your 123DX file to using the drop-down list of available types.

Download your file

Click the download link to receive your converted file.

Frequently Asked Questions

Is it free to use the 123DX conversion tools?

Yes! Our 123DX conversion tools are 100% free to use.

Are there any 123DX conversion usage limits?

No, you can convert as many files as you wish. We do not impose any conversion limits on our 123DX conversion tools.

How long does it take to convert my 123DX?

We aim to process all 123DX conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files and significantly longer for some larger file formats, so please be patient.

What does the 123DX conversion process involve?

Once your 123DX file has been uploaded and we know the file format you wish to convert it to, our bespoke conversion software will convert your 123DX and make it available for you to download with a unique download URL.

Is it safe to convert my 123DX on FabConvert.com?

Yes, of course it is! Your 123DX, once converted, is deleted 20 minutes after upload, and the download link will expire after this time.

Can I convert my 123DX on Linux, Android, iOS or Mac OS?

Yes! Our 123DX conversion tools will run on any system with a modern web browser.

Is there any support for me when using the 123DX tool?

If you are having difficulty converting your 123DX, you can contact us, and we will try to help where possible.

123DX file format information

Extension	123DX
Full Name	Autodesk 123D
Type	CAD
Mime Type	application/octet-stream
Format	Binary

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.

123DX Converter Capabilities

Currently, our 123DX converter can only convert from 123DX files, our developers are working to allow converting to 123DX files in future versions of our tools.