Joshua,
With Row#1 as your Field Headers:
"A" Column: Start Time
"B" Column: Finish Time
"C" Column: Total Hrs formatted as [H]:mm:ss
"D" Column: Yes/No

You can use the following formula in your "Yes/No" column, with Row#1 as
your Field Headers:
=IF($A2="","",IF((B2-A2)*2424,"NO","YES"))
This will give you a "YES" response for 24 hrs, if you want a "NO" response
for 24 hrs use this:
=IF($A2="","",IF((B2-A2)*24=24,"NO","YES"))
Drag formula down the column.
You can leave the Cell format for that Column as "General".

--
Add MS to your News Reader: news://msnews.microsoft.com
Rich/rerat
(RRR News) <message rule
<<Previous Text Snipped to Save Bandwidth When Appropriate


"Joshua" wrote in message
...
Thank you that helped alot

I also want to know if anything has gone over a 24hr time limit
before I had it calculate =IF(C324,"NO","YES")
so if C3 was 25:00 it would give me a NO or 23:00 a yes
right now it gives me all YES even if it is over 24
Do I have to change the format of =IF cell or input a new formula

Thanks for your time

"Bernard Liengme" wrote:

=B1-A1
Format the cell with custom format [h]:mm to see 2:30 or 24:30, or with
[hh]:mm to see 02:30 or 24:30
The [ ] are needed to get Excel to display more that 24 hours
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
remove caps from email


"Joshua" wrote in message
...
I am trying to get the difference between date and time into the hh:mm
format.
Example:

Start Date End Date Time taken to
complete
7-1-09 8:00 AM 7-2-09 8:30 AM 24:30

How can i get it to calculate the difference between the date and the
time