To do Alt + M H on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, H.
Command: Show Formulas
This is how to do Alt + M H 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 + M H toggles Show Formulas mode in Excel. When enabled, cells display their underlying formulas instead of calculated results. This is invaluable for auditing spreadsheets, finding formula errors, and understanding how calculations work. Press it again to return to normal view.