Excel spreadsheets are digital tools used for organizing, analyzing, and storing data in a tabular format. Each spreadsheet consists of rows and columns, creating cells where users can input numbers, text, or formulas. This structure allows for easy manipulation and calculation of data, making it useful for tasks like budgeting, scheduling, and data analysis. Users can create charts and graphs from the data in Excel spreadsheets, helping to visualize information clearly. Additionally, Excel offers various functions and features, such as sorting, filtering, and pivot tables, which enhance data management and reporting capabilities.