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Details of extension .123c

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .123c file?
  • Which program can create the .123c file?
  • Where can you find a description of the .123c format?
  • What can convert .123c files to a different format?
  • Which MIME-type is associated with the .123c extension?
Autodesk 123C Drawing .123c file icon

Autodesk 123C Drawing

The 123C file is an Autodesk 123C Drawing.
Category: Document files
Application: -
Program name: -
Mime-type: application/octet-stream
Magic bytes (HEX): -
Magic string (ASCII): -
Related extensions:
.lyr bestIMAGE Layer Data
.not Veign Note-It Note
.not E-Sword Notice
.bn NewsRoom Document
.icw InterCAD Document

Other types of files may also use the .123c file extension. If you have helpful information about .123c extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

.123d Autodesk 123D Drawing
.123 Lotus 1-2-3 Worksheet

The .123c filename extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

123d (1)

Can't open a .123c file?

If you want to open a .123c file on your computer, you just need to have the appropriate program installed. If the .123c association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.123c

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android