=count(a:a)
will count the number of cells that contain numbers (including dates and times!)

=counta(a:a)
will count the cells that contain anything--including formulas that evaluate to
="" (that look blank).

=countblank(a:a)
will count the number of cells that are empty or look blank (evaluate to ="").

Debra Dalgleish has lots of notes about counting stuff he
http://contextures.com/xlFunctions04.html



RC wrote:

I have one column of date. In it is data of the type -
12345
15689
12458A
C55897
and some blank cells.

I want to count the number of cells that are not blank whatever they contain
(i.e. whether they are pure numbers or text/numbers or numbers/text.
Can you provide a formula for this.

Thanks

--

Dave Peterson