How to open a .WKU file online
Three steps, a few seconds, no Excel.
Choose your .WKU file
Drag your .WKU file onto the box above, or click Choose file.
Supported
Your .WKU file is opened: every sheet, formula and merged range.
Browse, search, export
Switch sheets, click a cell to see its formula, search the whole sheet and export it as CSV or JSON.
What is a .WKU file?
Everything worth knowing about Lotus 1-2-3 spreadsheet file files.
A .WKU file is a Lotus 1-2-3 Spreadsheet developed by IBM. These files contain spreadsheet data and are used for organizing and calculating information. They can be opened with applications such as Lotus 1-2-3, Microsoft Excel, and Corel Quattro Pro.
Programs that open .WKU files
| Developer | IBM |
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Related viewers
Other free viewers for related formats.
Is my .WKU file uploaded anywhere?
No. Your .WKU file is opened for you.
Are formulas recalculated?
The viewer shows the values Excel or LibreOffice saved in the file, plus the formula behind each cell when you click it. It doesn't recalculate, so what you see is exactly what the author saw when saving.
Can I open a password-protected .WKU file?
Not yet. Files encrypted with a password to open are detected and reported; sheets that are only "protected against editing" open normally.
Why doesn't my chart or image show?
This viewer focuses on cell data: values, formulas, merged cells and fill colours. Charts, images and pivot table layouts are not drawn yet.
How big a file can I open?
Up to 50 MB. Large sheets are shown 500 rows at a time so your browser stays fast. Search still covers every row.
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