File extension 123
| File type | Lotus 1-2-3 Spreadsheet Format |
| Developer | IBM |
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What is a 123 file?
123 file extension is native to Lotus 1-2-3, a spreadsheet program. Lotus 1-2-3 was for quite a long time the standard spreadsheet application on MS-DOS operating systems.
123 files structure is typical for spreadsheet documents. Document is divided into rows and colums with cells. Cells can hold data inputed manually or by calculated using so-called formulas. Single 123 spreadsheet document can contain various types of data – calculations, tables, lists, charts, etc. 123 format supports many basic database operations.
Program(s) that can open the .123 file
Mac OS
Linux
How to open 123 files
If you cannot open the 123 file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports 123 among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the 123 file can be found in the table. Now just download and install the appropriate application.
Possible problems with the 123 format files
The inability to open and operate the 123 file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Lotus 1-2-3 Spreadsheet Format file. Below is a list of possible problems.
- Corruption of a 123 file which is being opened
- Incorrect links to the 123 file in registry entries.
- Accidental deletion of the description of the 123 from the Windows registry
- Incomplete installation of an application that supports the 123 format
- The 123 file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the 123 file.
- Drivers of equipment used by the computer to open a 123 file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the 123 file should operate with your programs without any problem. If the problem with the 123 file has not been solved, it may be due to the fact that in this case there is also another rare problem with the 123 file. In this case, the only you can do is to ask for assistance of a professional staff.
Similar extensions
| .aws | Ability Spreadsheet Spredsheet Format |
| .dfg | Data Flask Grid Format |
| .dis | Oracle Discoverer Workbook Format |
| .edx | EDraw Max Drawing Format |
| .edxz | Edraw Compressed XML FIle |
| .fcs | First Choice Spreadsheet |
| .fods | OpenDocument Flat XML Spreadsheet Format |
| .gsheet | Link To Google Sheets Web Application Spreadsheet Document |
This extension
can be converted to:
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.123) you have two ways to do it. The first and the easiest one is to right-click on the selected 123 file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the 123 file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. 123) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.