Image: Master the fundamentals of Excel and build a solid foundation for the future

If 256 columns, each with 65,536 rows aren't enough, you can just use more sheets to expand your workbook. You can have up to 256 sheets in a single Excel workbook. So, if you do the math? 256 columns x 65,536 rows x 256 sheets = 4,294,967,296 total cells available for your use in a single Excel file. When you start a new Excel workbook, you are provided with three sheets. You can add more any time you like. Further, unlike cells and columns, you can rename sheets to make it easier to find what you're looking for. To move to a different sheet, click the tab that corresponds to the sheet you want to work with. It's as easy as that. To rename a sheet, right-click the sheet you'd like to rename and choose the Rename option from the resulting shortcut menu.