In an Excel sheet, what may be a reason to use a macro?

Using a macro in Excel is particularly beneficial for automating repetitive tasks. Macros allow users to record a series of actions performed in Excel, so that these actions can be executed automatically with a single command. This is ideal for tasks that require multiple steps, such as entering data, formatting cells, or applying certain functions repeatedly. By using macros, you save time and reduce the risk of errors that might occur if these tasks were done manually.

For example, if you're regularly generating reports that involve the same set of data manipulations – such as formatting, calculations, and printing – you can record these actions in a macro, enabling you to perform the entire sequence with a simple click or keyboard shortcut in the future. This increases efficiency and consistency, making macros a powerful tool for users looking to streamline their workflow in Excel.