Details of extension .123
On this page, we're going to take a closer look at the .123 file extension, which is related to Lotus 1-2-3 Worksheet. We'll explain what exactly a .123 fileformat is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .123 files into different formats, we'll give you some tips on how to do that too. Let's see the file format associated with this file extension!
Contents
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Lotus 1-2-3 Worksheet
The .123 file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .123 extension may contain various content types. If you have helpful information about this extension, write to us!
Could someone have spelled the .123 file extension wrong?
In our database, we came across the following similar extensions:
Having trouble opening a .123 file?
If you want to open a .123 file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .123 association can trigger this error.
Windows can't open this file:
File: example.123
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