Lotus 1-2-3 worksheet
File type: Spreadsheet and workbook file
The fj3 file extension identifies a Lotus 1-2-3 worksheet file.
This file belongs to the Japanese version of Lotus 1-2-3, a spreadsheet program for Microsoft Windows.
File type category:
Spreadsheet and workbook file
Date updated: October 7, 2026
Record marked as obsolete and not updated for a long time.
The fj3 file stores worksheet data created by the Japanese version of Lotus 1-2-3. It may contain spreadsheet values, formulas and formatting.
Lotus 1-2-3 was originally developed by Lotus Development Corporation and was later owned by IBM. The software was available for Microsoft Windows and other operating systems, although this record is associated with the Windows version.
The fj3 format is obsolete and is no longer commonly used. Its associated MIME type is application/vnd.lotus-1-2-3.
Use Lotus 1-2-3 for Microsoft Windows to open an fj3 file. Because the format is obsolete, the original software may be difficult to obtain or run on current systems.
Open the fj3 file in Lotus 1-2-3 and export or save the worksheet in a format supported by that software. Conversion is not practical if the file cannot be opened by Lotus 1-2-3.
Software applications that can open fj3 files:
Microsoft Windows
Software applications that can edit fj3 files:
Microsoft Windows
Software capable of saving fj3 files:
Microsoft Windows
Software apps that create fj3 files:
Microsoft Windows
Software apps that print fj3 files:
Microsoft Windows
Language
