LibreOffice Calc Online is an extension for Chrome that facilitates the creation and editing of spreadsheets. Users can access a powerful tool supporting XLS Microsoft Excel and LibreOffice formats. It offers a wide range of features for spreadsheet management.

With LibreOffice Calc Online, users can utilize various calculation tools, including mathematical, statistical, and financial functions. Complex formulas can be created using cell references and operators, similar to Microsoft Excel's capabilities. Additionally, the app provides data analysis tools such as sorting, filtering, and pivot tables to identify trends in data effectively.

Moreover, users can create professional charts and graphs to visually represent data, customizing their appearance. The extension offers templates for different spreadsheet types like budgets and invoices, and supports compatibility with Microsoft Excel, enabling seamless import and export of files in various formats.