What is the primary function of the 'Format Painter' tool in Excel?

The primary function of the 'Format Painter' tool in Excel is to quickly copy formatting from one part of a worksheet to another. This tool allows users to replicate the visual attributes of a selected cell or range of cells—such as font type, size, color, cell fill, borders, and other formatting options—making it a highly efficient way to maintain a consistent look throughout a worksheet.

By using the Format Painter, you can simply click on the cell with the desired formatting, activate the tool, and then click on the target cell(s) where you wish to apply that formatting. This saves time compared to manually adjusting each formatting option individually for every cell, particularly in larger worksheets where uniformity in appearance is important for readability and professionalism.

The other options, though related to functionalities in Excel, serve different purposes: creating charts, inserting comments, or changing font size and style are not the specific roles of the Format Painter.