Danny

How about

=IF(OR(B10="",B9="",H5="",E10=""),"",(B10-B9)/(H5-E10))

--
HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
DTHIS
www.nickhodge.co.uk


"danny boahn" wrote in message
...
That is giving me a false statement. I have in cell f10
{=(b10-b9)/(h5-e10)}.
I do not want the formula to do anything until all cells are filled that
the
formula applies to.

Danny

"Nick Hodge" wrote:

Danny

Wrap it in an IF statement

=IF(A1="","",A1/B1)

or similar

--
HTH
Nick Hodge
Microsoft MVP - Excel
Southampton, England
DTHIS
www.nickhodge.co.uk


"danny boahn" wrote in message
...
how can i stop my worksheet from formula calculation until all the
cells
for
the formula are filled