Opening a 123DX File

The 123DX file type is primarily associated with 123D.

123DX	File extension: 123DX
	File type:	model

What is a 123DX file

123DX files mostly belong to 123D by Autodesk. A 123DX file is a 2D or 3D model created with 123D Design, a computer-aided design program distributed as part of the 123D application suite developed by Autodesk. This file is saved in ZIP compression format. It contains drawings, model geometry, measurements, textures, materials, and all other assets of a model. Autodesk discontinued 123D design application suite in 2016 and replaced its programs with Fusion 360, Recap, and Thinkercad. The "Upload" feature in newer versions of Fusion 360 allows users to import, edit, and export a 123DX file in a different format.

How to open 123DX files

You need a suitable software like 123D to open a 123DX file. You need a suitable software like 123D from Autodesk to open a 123DX file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your 123DX file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a 123DX file directly in the browser:. Just drag the file onto this browser window and drop it.

Online 123DX Text Viewer

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Online File Viewer

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What to Do When a .123DX File Fails to Open

Because .123DX files can originate from different programs, they aren't universally openable.

Identify the Source: Receiving this from a 3D designer or printing workflow suggests an Autodesk 123D CAD model.
Check the Header: Inspect the first bytes in a text or hex editor:
- "PK" indicates a ZIP archive.
- Readable XML/JSON suggests a text-based model.
- Scrambled characters imply a binary format.
Use the Original Software: The original program is usually required. Try Autodesk 123D Design, Meshmixer, or Fusion 360, or ask the sender if uncertain.
Use this Webpage: Drag and drop the file into our viewer to detect the format, extract readable metadata, and preview contents when possible.

Technical Data for 123DX File Extension

File classification:

CAD

Related files:

dx, zip, ipt, vda, iam

Related links:

Fusion 360

a 123dx model is a special file format by Autodesk and should only be edited and saved with the appropriate software.

How to solve problems with 123DX files

Associate the 123DX file extension with the correct application.
Update your software that should actually open models. Because only the current version supports the latest 123DX file format. Search, therefore, e.g. on the Autodesk manufacturer website after an available 123D update.
To make sure that your 123DX file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .123DX file online - secure, fast, and no downloads needed.