Undo and redo

Almost every change to the sheet — insert, move, type, delete, format — goes on a worksheet undo stack. You can walk back more than fifty steps.

Where to click

• Quick Access: Undo and Redo, to the right of Share.
• Home tab, Edit group: the same commands.
• Ctrl+Z — undo. See keyboard shortcuts.
• Ctrl+Shift+Z or Ctrl+Y — redo.

On a Mac, use Command instead of Ctrl.

When the field wins

If the caret is inside a math field or a text region, the first undo/redo belongs to that editor (the last characters you typed). After the field has nothing left to undo, further undos apply to the worksheet — a moved region, a deleted block, a theme change.

Evaluate All does not add a stack entry you need to undo; it recomputes from the current expressions. Changing an expression and evaluating is undone by undoing the typing, not by “unevaluating.” Cut, copy, and delete use the same clipboard selection as the Home Edit group.