Excel is spreadsheet software used to create tables, analyze data, and perform calculations. It allows users to input numerical values into cells organized into columns and rows to create tables and lists. Excel then calculates totals and can print tables in a neat layout. Charts and graphs can also be created in Excel to visually present data in formats like bar graphs, pie graphs, column graphs, and line graphs to better understand the information. Excel contains buttons to format text, insert tables, add graphs, and include math functions.