Hello!
I’m currently trying to learn more “Calc” functions and I’m trying to do a “weekly time-sheet” so I can write down my working hours and track them per week. The issue I have is that whenever I don’t add a value to one of my “fields” the counting doesn’t work. I know that the reason is my function and how I do the calculation, but I can’t figure out how I add another check to see if a field is empty and then ignore it.
It kind of looks like this
| Day | Clock-in |Break Start|Break end|Clock-out|Hours worked|
|—|—|—|—|—|—|
|Monday|09:10|12:20|13:00|15:48|“Formula to count hours worked this day”|
|Tuesday|09:00|12:00|13:00|17:00|“Formula to count hours worked this day”|
|Wednesday|09:10|-|-|-|#VALUE!|
|Etc.||||||
|Total hours worked|||||“Formula to count total worked hours”|
If possible I would also prefer if instead of making a field empty I can use a “-” since I think it makes it easier to read the sheet. Though if that makes it a lot harder, I’m glad to cut it. 
My problem is that when I haven’t finished my day yet (or even started it) it instead says “#VALUE!” and my total hours can’t be counted either since it tries to count the total working hours per week, but one (or more) of the values are “#VALUE!”.
I would love if I could get some help so until I fill in “clock-out” the value is automatically set to 0.0 Hours worked. So that if I’m out sick one day or haven’t reached that weekday yet, I can still see how many hours I have worked on a particular week.
Formula for counting “Hours worked” - This is where I believe the problem is
I would if I could get some help here to add an extra check so if any of the fields have the value “-” it defaults to make it 0.0 worked hours. And once I have a clock-in and clock-out it counts how many hours I have worked.
I don’t have a break every week-day since I only work 4 hour days some days of the week, so the “break-start and break-end” need to be optional fields which is what I tried doing by this part “(D33=”-")".
=IF((D33="-");(F33-C33)*24;(F33-C33)*24 - (E33-D33)*24)
Formula for counting “Total hours worked”
I don’t really think this needs anything changed if I can get help to make all “Hours Worked” fields to be 0 until they have a value in Clock-out.
=SUM(G9:G13)
Thanks in advance for any help with solving this! I tried looking at other time-sheets, but I just couldn’t figure out how if (something) else if (something else) else if (something else) else (last part). 
