Try this array formula** :

=MAX(ABS(A1:D1))

** array formulas need to be entered using the key combination of
CTRL,SHIFT,ENTER (not just ENTER)

--
Biff
Microsoft Excel MVP


"HW" wrote in message
...
I have a set of values in 4 columns that I need to see as positive or
negative. However, I need a 5th column to show me the maximum of the
absolute values of those 4 columns.