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Lotus 1-2-3 version 2.x spreadsheet
File type: Spreadsheet and workbook file
Files with wk1 extension are spreadsheets saved in old Lotus 1-2-3 office program. These files were used in version 2.X.
Found 2 different file type records with the same wk1 filename suffix.
File type category:
Spreadsheet and workbook file
Date updated: December 1, 2023
Record marked as obsolete and not updated for a long time.
File extension wk1 is was used for the default document file type in Lotus 1-2-3 version 2.x from early 1990s.
A .wk1 files were used as the default spreadsheet format of Lotus 1-2-3 version 2.x including, rows and columns, formulas etc.
MIME types:
application/vnd.lotus-1-2-3
application/x-123,
application/lotus
application/x-lotus123
zz-application/zz-winassoc-123
Use Lotus 1-2-3 version 2.x or later to open the .wk1 files.
Also some modern spreadsheets programs can still open the .wk1 files. However the latest versions of Microsoft Excel from version 2007 no longer support that format. You can have luck with any earlier version of Excel, but you will probably lose most of the formatting from the .wk1 files.
You can open *.wk1 in Microsoft Excel and save it to another file format. You will probably lose formatting.
Software applications that can open wk1 files:
Microsoft Windows
Multiplatform
Software applications that can edit wk1 files:
Microsoft Windows
Multiplatform
Software capable of saving wk1 files:
Microsoft Windows
Multiplatform
Software apps that create wk1 files:
Microsoft Windows
Software apps that convert wk1 files:
Microsoft Windows
Multiplatform
Software apps that import wk1 files:
Microsoft Windows
Linux/Unix
Software apps that print wk1 files:
Microsoft Windows
File type category:
Database file
Date updated: June 14, 2019
The wk1 file extension is associated with AutoCAD Civil and other CAD modeling applications developed by Autodesk for Windows and Apple Mac OS X operating systems.
The wk1 file stores hydro data used by Autdesk apps.
Use AutoCAD Civil to open *.wk1 files.
Probably cannot be converted to other formats.
Software applications that can open wk1 files:
Multiplatform
Software applications that can edit wk1 files:
Multiplatform
Software capable of saving wk1 files:
Multiplatform
Software apps that create wk1 files:
Multiplatform
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