Excel is spreadsheet software that allows users to create tables to store, organize, and analyze data arranged in rows and columns. It performs automatic calculations on numerical values and creates graphs and charts. Excel is part of the Microsoft Office suite of productivity software and uses a grid of cells referenced by column letters and row numbers to enter text, numbers, and formulas. Users can designate a range of cells as a table to easily add and manage rows of related data. Charts in Excel include pie charts for percentages, column charts for comparisons, bar charts for horizontal comparisons, and line charts for trends over time.