Hi,

I need help for a Excel formula -

I want cells C19, C20, C21 to sum the values of the categories in column D, if the category cell(column D) is empty I would like the number to summed up as category SP.
"C Column" "D Column"
USD
March Category
10 SP
30 TP
20 SP
10
5 SP
15 TP
5 DI
7 DI
5
5
8 SP
10 TP
15 DI
145

SUM SP
SUM TP
SUM DI

I am using below formula but do not know how to check if cell value is blank :
=SUMIF(D4:D16,"SP",C4:D16)