LibreOffice Calc is a free and open-source spreadsheet program that is part of the LibreOffice suite. It allows users to create, edit, and manage spreadsheets, making it easy to perform calculations, analyze data, and visualize information through charts and graphs. Calc supports various file formats, including those used by Microsoft Excel, ensuring compatibility with other software. With features like formulas, functions, and pivot tables, LibreOffice Calc is suitable for both personal and professional use. It is available on multiple operating systems, including Windows, macOS, and Linux, making it accessible to a wide range of users.