Lotus 1-2-3 Worksheet 2.0
Readablespreadsheet
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Identify it
| Extensions | .wk1.wk2.wr1 |
|---|---|
| MIME types | application/vnd.lotus-1-2-3application/x-123 |
| Signatures | 00000200060406000800 at byte 0 (Lotus 123 Worksheet 2.0) |
| PRONOM | x-fmt/114 |
| Wikidata | Q45347222 |
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Open it
- LibreOfficeOpen source
- LibreOffice CalcOpen source
Convert it
| To | With | Fidelity | Command and losses |
|---|---|---|---|
| Microsoft Excel for Windows 2007 onwards | LibreOffice | Partial | soffice --headless --convert-to xlsx in.wk1Layout may shift; macros and some features are not kept. |
| OpenDocument Spreadsheet file format family | LibreOffice | Partial | soffice --headless --convert-to ods in.wk1Layout may shift; macros and some features are not kept. |
| LibreOffice | Partial | soffice --headless --convert-to pdf in.wk1Fixed layout: the document is no longer editable. | |
| Comma Separated Values | LibreOffice | Lossy | soffice --headless --convert-to csv in.wk1First sheet only, values only: formulas, formatting and other sheets are lost. |
Sources
From Converters (FFmpeg, ImageMagick, Pandoc, LibreOffice), PRONOM, Wikidata. Updated 2026-10-20.