
Excel includes several 'count' functions that might be helpful to you in your quest to count data cells!
Let's illustrate how each is used with the following spreadsheet.

COUNTA: This function will return the number of entries
(numeric data AND text data) in the selected range of cells. This function's
range must be a block of contiguous cells. The blue
numbers represent the results of the COUNTA function on the specified range
of cells.
=COUNTA(Range)
COUNT: This function will return the number of cells that contains NUMERIC data in the selected range of cells. This function's range must also be a block of contiguous cells. The red numbers represent the results of the COUNT function on the specified range of cells.
=COUNT(Range)

COUNTIF: This function will calculate the number of cells in a selected range that meet the criteria specified in a conditional value expression (as in <=50). The green numbers represent the results of the COUNTIF function for the specified block of cells.
=COUNTIF(Range,"Value")

COUNTBLANK: This function will count the number of blank cells in a range of contiguous cells. The fuchsia numbers represent the results of the COUNTBLANK function for the specified block of cells.
=COUNTBLANK(Range)
