Select all cells on a worksheet
To select all cells on a worksheet, use one of the following methods:
Click the Select All button.
Note If the worksheet contains data, and the active cell is above or to the right of the data, pressing CTRL+A selects the current region. Pressing CTRL+A a second time selects the entire worksheet.
Tip If you want to select all cells in the active range, press CTRL+SHIFT+*.