Convert 123 to XLSX

How to convert 123 to xlsx. Exporting old 1-2-3 spreadsheets to Excel. Possible 123 to xlsx converters.

Convert 123 to xlsx

How to convert 123 to xlsx file

Opening or even conversion of old Lotus 1-2-3 spreadsheets (.123) can be a little tricky in modern spreadsheet editors. However, some (mainly open source) programs, such as Calc programs from Ooo or LibreOffice, should still be able to open and possible re-save .123 files to other formats.

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Understanding 123 and XLSX file formats

The 123 file format is associated with Lotus 1-2-3, a spreadsheet program that was popular in the 1980s and 1990s. It was one of the first spreadsheet applications available for personal computers and was widely used for data analysis and financial modeling. The 123 format is now considered obsolete, as Lotus 1-2-3 has been discontinued.

On the other hand, the XLSX file format is a modern spreadsheet format used by Microsoft Excel, part of the Microsoft Office suite. Introduced with Excel 2007, XLSX is based on the Open XML format, which allows for more efficient data storage and better compatibility with other software. It is the standard format for Excel spreadsheets today.

How to convert 123 to XLSX

Converting a 123 file to an XLSX file involves opening the 123 file in a compatible program and saving it in the XLSX format. Since Lotus 1-2-3 is no longer supported, you may need to use alternative software that can handle 123 files.

Best software for 123 to XLSX conversion

One of the best software options for converting 123 files to XLSX is LibreOffice Calc. LibreOffice is a free and open-source office suite that can open a wide range of file formats, including 123 files. To convert a 123 file to XLSX using LibreOffice Calc, follow these steps:

  • Open LibreOffice Calc.
  • Use the File → Open menu to locate and open your 123 file.
  • Once the file is open, go to File → Save As.
  • In the Save as type dropdown menu, select XLSX.
  • Click Save to complete the conversion.

Another option is to use an online file conversion service, such as Zamzar or Convertio, which can handle 123 to XLSX conversions without the need to install any software.


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