Article updated on April 14, 2018

The FACTDOUBLE returns the double factorial of a number.

Formula in cell C3:

=FACTDOUBLE(B3)

Excel Function Syntax

FACTDOUBLE(number)

Arguments

number Required. The number you want to calculate the double factorial of.

Comments

The double factorial of 6 is 48, 6*4*2 = 48.

The double factorial of 9 is 945, 9*7*5*3 = 945.