- Extension
- .wk1
- .xltx
- Format
- Binary
- Binary
- Category
- Spreadsheet
- Spreadsheet
- Developer
- IBM
- Microsoft
- Description
- Lotus Worksheet (wk1) is a file type used by the Lotus 1-2-3 spreadsheet application. It is a binary file format used to store worksheets, which can contain numerical and textual data, as well as formulas, charts, and images. It is now considered an obsolete file type and is replaced by the newer xlsx format.
- An XLTX file is a template created by Microsoft Excel, a program used for creating spreadsheets.
- MIME Type
- application/vnd.lotus-1-2-3
- application/vnd.openxmlformats-officedocument.spreadsheetml.template
