A1 = Date in
B1 = Time in
C1 = Date out
D1 = Time out

Try the formula;
=C1+D1-(A1+B1)

and format the formula cell as below... FormatCEllsCustomType as below

[h]:mm



--
Jacob (MVP - Excel)


"LabITGeek" wrote:

I'm trying to figure out how to calculate the duration between the
"date/time" in to the "date/time" out. I have four cells DATE IN, TIME IN,
DATE OUT, TIME OUT. I have to somehow merge DATE IN/TIME IN and DATE
OUT/TIME OUT and then subtract the difference. But I can't seem to figure
how to merge the two cells and to obtain a realistic duration.