hi
to calculate time, you must have a basic understanding of how excel keeps
date/time. mathmaticly time is keep as a decimal value of 1 day. 12 hours =
..5 day

see these sites for more details plus tips, tricks, templates.
http://j-walk.com/ss/excel/files/timesht.htm
http://www.cpearson.com/excel/overtime.htm
http://www.cpearson.com/excel/DateTimeEntry.htm
http://www.xldynamic.com/source/xld.XtraTime.html
http://www.mvps.org/dmcritchie/excel/datetime.htm

regards
FSt1

"Soulja Boy" wrote:

I am making a schedule for my business and i need to figure out the total
amount in hours that each employee works. While I tried to do this I had
trouble entering the intervals (ie. 10am to 6 pm), and finding the sum of
them(ie. Monday to Friday)
-thankyou