.123 file: how to open it on Windows
4 Windows apps register the .123 extension. Install one of them to open the file with a double-click.
About the format
- Format
- Lotus 1-2-3 spreadsheet
- MIME type
- application/vnd.lotus-1-2-3
- PRONOM identifier
- fmt/1452, fmt/1453
Format data: freedesktop.org shared-mime-info and PRONOM (The National Archives, UK).
- LibreOffice
LibreOffice is a free and powerful office suite, and a successor to OpenOffice.org (commonly known as OpenOffice). Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity.
- OpenOffice
The Free and Open Productivity Suite
- Lotus 1-2-3 File Converter
Convert Lotus 1-2-3 spreadsheets locally to XLSX, PDF, CSV, and more.
- LibreOffice PreRelease
LibreOffice is a free and powerful office suite, and a successor to OpenOffice.org (commonly known as OpenOffice). Its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity.
Related guide: Change the default app for a file type in Windows