Try this formula:

For
A1: (StartTime)
B1: (EndTime)
C1: =MOD(B1-A1,1)
Format C1 as Category: Time, Type: 13:30:55 ( or Custom: h:mm:ss;@)

Does that help?
***********
Regards,
Ron

XL2002, WinXP


"PA" wrote:

I remember reading this on this or another Excel group, and now can not find
it. Please help

Column A and B contain Start and End time.
Column C calculates elapsed time =B2-A2
=B3-A3
etc
The sum total elapsed time at bottom of Column C
What I can not remember is the custom format to use in column C so that if
the end time goes past midnight, it calculates correctly.
Thanks for repeating the answer for me.

Paul