In Microsoft Excel, the number of worksheets (tabs) you can have in a single workbook is limited by system resources and available memory. Excel supports a maximum of 1,048,576 rows and 16,384 columns, and each worksheet can have up to 16,384 columns. However, the actual number of worksheets you can create in a workbook depends on various factors, including your computer’s memory and processor.

Practically speaking, most computers can handle a significant number of worksheets without performance issues. It’s not uncommon to have workbooks with dozens or even hundreds of worksheets. However, creating an excessively large number of worksheets in a single workbook can lead to slower performance and may not be practical for managing data effectively.

If you find that you need to organize a large amount of data or content that requires many worksheets, it’s often a good practice to consider splitting the content into multiple workbooks or using other Excel features like PivotTables, Tables, or named ranges to manage and analyze the data more efficiently. This can help you avoid performance issues and make your workbooks more manageable.