LanguageWK1
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.
What is wk1 file?
File type category:
Spreadsheet and workbook file
Date updated: December 1, 2023
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
How to open wk1 file?
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.
How to convert wk1 file?
You can open *.wk1 in Microsoft Excel and save it to another file format. You will probably lose formatting.
Suggested software to open wk1 file:
Associated software actions with the wk1 file
Software applications that can open wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Microsoft Excel (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Apache OpenOffice Calc (OpenOffice.org Calc) (Multiplatform)
LibreOffice Calc (Multiplatform)
Software applications that can edit wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Microsoft Excel (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Apache OpenOffice Calc (OpenOffice.org Calc) (Multiplatform)
LibreOffice Calc (Multiplatform)
Software capable of saving wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Microsoft Excel (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Apache OpenOffice Calc (OpenOffice.org Calc) (Multiplatform)
LibreOffice Calc (Multiplatform)
Software apps that create wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Software apps that convert wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Microsoft Excel (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Apache OpenOffice Calc (OpenOffice.org Calc) (Multiplatform)
LibreOffice Calc (Multiplatform)
Software apps that import wk1 files:
ABC Amber Text Converter (Microsoft Windows)
ABC Amber Lotus Converter (Microsoft Windows)
Gnumeric (Linux/Unix)
Software apps that print wk1 files:
Lotus 1-2-3 (Microsoft Windows)
Corel Quattro Pro (Microsoft Windows)
Autodesk hydro data
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.
How to open wk1 file?
Use AutoCAD Civil to open *.wk1 files.
How to convert wk1 file?
Probably cannot be converted to other formats.
Suggested software to open wk1 file:
Associated software actions with the wk1 file
Software applications that can open wk1 files:
Autodesk Civil 3D (Multiplatform)
Software applications that can edit wk1 files:
Autodesk Civil 3D (Multiplatform)
Software capable of saving wk1 files:
Autodesk Civil 3D (Multiplatform)
Software apps that create wk1 files:
Autodesk Civil 3D (Multiplatform)