- Extension
- .wk1
- .xlt
- 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 xlt file is an Excel Template file used for creating new spreadsheets. It contains predefined data, formatting, and formulas that can be used to quickly create a new spreadsheet.
- MIME Type
- application/vnd.lotus-1-2-3
- application/vnd.ms-excel
