Hello Group,

I'm NEW here. I just wondering how to count the hours using Excel cells (for time table scheduling)....for example : 11:00-9:00 is 10 hours, "OFF" is 0 hour, "X" means 0 also, 10:00-7:00 is 9 hours, and so on. But when I try to put the hours, they show ###### in the cells? I know the time table is mixed with numbers and letters, that's why I'm confused to use any formula to do it, but my boss told me NOT to change the original format what so ever. Thx in advance.