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*Details: File format summary



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Name Lotus 1-2-3 Worksheet
Version 97
Other names  
Identifiers MIME:  application/vnd.lotus-1-2-3
MIME:  application/x-123
PUID:  fmt/1452
Classification Spreadsheet
Description Lotus 1-2-3 Workbook is a spreadsheet program produced by the Lotus Software Group (later acquired by IBM). The original release was in 1983 and it has been discontinued since 2013. The original 1-2-3 files have .wks extensions. Version 2.0 originally used a .wk1 extension but this was changed quickly to .wk2 and after this the number in the extension corrolates with the version number. Some later versions have the extension .123
Byte order  
Related file formats None.
Technical Environment  
Supported until  
Format Risk  
Developed by None.
Supported by None.
Source Digital Preservation Department / The National Archives
Source date 16 Oct 2021
Source description  
Last updated 16 Oct 2021
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