- Extension
- .123
- .xlt
- Format
- Binary
- Binary
- Category
- Spreadsheet
- Spreadsheet
- Developer
- IBM
- Microsoft
- Description
- The 123 file format is a proprietary file format developed by the Lotus Development Corporation for use with its Lotus 1-2-3 spreadsheet software. It is a binary file format, which means that it stores data in a binary format that is not easily readable by humans.
- 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
