Im trying to show downtimes at a plant. 09:00 - 12:00 - downtime of 3 hours. what formula do i use to do this? when i subtract the "hours" then the cell that contains the formula is in "hours" and doesn't covert to "number" correctly. Also, when the total hours goes over 24 its converting it into days, but i want total hours. Any help would be appreciated.