We need to briefly cover what happens when you merge several cells in Excel or Google Sheets. Or, more specifically, what does not. The merge cells function is designed to combine the actual cells ...

However, this shouldn't present too many issues, as Merge And Center and Center Across Selection were designed primarily for horizontal use, rather than vertical use.

If the Merge and Center button is missing, greyed out or in Excel, then this post offers a workaround that will help you move forward.