Excel macros are a set of programming instructions written in VBA (Visual Basic for Applications) that automate a repeated and standardized process in Excel and other Microsoft Office Applications. Macros are a series of instructions in the form of code that help automate manual tasks, thereby saving time. They can be recorded, named, saved, and executed as many times as required and whenever desired. Macros are useful for automating repetitive tasks associated with data manipulation and data reporting that must be accomplished repeatedly.

Here are some examples of how macros can be used in Excel:

• Adding headers and formatting to data
• Creating a button that will run a macro
• Formatting data and making it look nice
• Automating repetitive tasks, such as entering your companys name and address into a spreadsheet or creating a custom report

To create a macro, there are two methods: recording the macro or coding with VBA. When recording a macro, Excel translates the actions into VBA code under the hood. Macros can be created by recording them or writing them manually in VBA code.

To use a macro, you need to open the workbook in which you want to use the macro, hold the ALT key and press F11 to open the VB Editor, right-click on any of the objects in the project explorer, go to Insert > Module, and copy and paste the code in the Module Code Window.

In summary, macros in Excel are a powerful tool that can save time and automate repetitive tasks. They are a set of programming instructions written in VBA that automate a repeated and standardized process in Excel and other Microsoft Office Applications. Macros can be created by recording them or writing them manually in VBA code. Some examples of how macros can be used in Excel include adding headers and formatting to data, creating a button that will run a macro, and formatting data to make it look nice.