Lock a Numbers spreadsheet on Mac

You can lock a spreadsheet to prevent it from being accidentally edited, moved, deleted or renamed.

Lock or unlock a spreadsheet

  1. Click the spreadsheet name at the top of the window, then select or deselect the Locked tickbox.

    Pop-up for locking or unlocking a spreadsheet.
  2. Click outside the dialogue to close it.

Locking a spreadsheet isn’t the same as protecting it with a password — anyone can unlock the spreadsheet.

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