To do Alt + H W W on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, W, and W.
Command: Wrap Text
This is how to do Alt + H W W on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + H W W toggles text wrapping for selected cells. When enabled, long text that would normally overflow into adjacent cells will instead wrap to multiple lines within the cell, automatically expanding the row height to fit. This keeps your data contained within cell boundaries and improves readability for cells with lengthy content.