Question

This action would increase the number of cells in the workbook above the limit of 5000000 cells.

Answer 1

When you reach the 2m cell limit Google will alert you when you try to add more rows or columns: “There was a problem. This action would increase the number of cells in the workbook above the limit of 2000000 cells.”

Answer 2

"You can open a blank sheet and start to add more and more blank sheets. When you create the blank sheets of around 192 blank, you would hit the message that the action would increase the number of cells in the workbook above the limit of 5000000 cells.

The number of sheets that you can open in an excel sheet would totally depend on the number of cells that are in each sheet.

"