How do I stop a formula if the cell is blank?
问题 How do I stop a formula from running if there is no data in the cell to the left? I'm trying to work out how to display elapsed time using a fixed time and a dynamic clock. My fixed time is in Cell D5 and my dynamic clock in Cell J4 (picture attached). To work out 'elapsed time' my forumla is as follows; =J4-D5 , which works fine. However, when I copy the forumla down if there is no data in cells D6,D8,D9 etc, then it will just display the current time. Is there some error checking that I can