FACTDOUBLE Function in Excel: Syntax, Examples and Free Practice

By Rinkesh Shah, founder of Cellgrids.

FACTDOUBLE is an Excel Math & Trig function. Returns the double factorial of a number.

FACTDOUBLE syntax

=FACTDOUBLE(number)

FACTDOUBLE is used in financial models and engineering-style calculations where precise numeric work is needed.

Open the live Excel-style spreadsheet and try FACTDOUBLE yourself. No Excel install or sign-up needed to start.

What does the FACTDOUBLE function do in Excel?

Returns the double factorial of a number.

What is the syntax of FACTDOUBLE in Excel?

The syntax is =FACTDOUBLE(number). number: A number to use in the calculation.

Where can I practice FACTDOUBLE online for free?

Open the free live spreadsheet on Cellgrids and try FACTDOUBLE yourself. No Excel install is needed and you can start without signing up.