How to tell if Excel 2013 is 32-bit or 64-bit
First, select “File” from the main menu.

Then select “Account” from the menu on the left. On the right side of the screen is a small box with the words “About”. Despite lacking any visual indication that this is a button, it actually is one. Click on this button.

At the top of this window after a long sequence of numbers and letters are the words “32-bit” or “64-bit”.
