How can I increase the font size of all cells in my excel list of names and addresses?

I have typed an address list in Excel and the font size is 11 which is far too small to read easily. I want to increase that to 14 size, but so far I can only make the change one cell at a time. Is there a way to "select all" and make the font change all at one time?

Thanks

Drag the mouse over the cells that you want to change until the background changes color to indicate they are selected. Then set the font size ay the top.