Press Alt + Enter to insert a line break within the same cell
Enable Wrap Text if the text does not display on multiple lines
Use CHAR(10) in a formula to return a line break in a cell
On Mac, press Control + Option + Return or Command + Option + Return, depending on Excel version
In formulas, concatenate text with CHAR(10) to place content on separate lines
Make sure the cell is formatted to show wrapped text if needed