# FACT

Returns the factorial of a number. The factorial of a number is equal to 1*2*3*...* number.

Syntax

FACT(number)

Number     is the nonnegative number you want the factorial of. If number is not an integer, it is truncated.

Example

The example may be easier to understand if you copy it to a blank worksheet.

1. Create a blank workbook or worksheet.
2. Select the example in the Help topic.

Note   Do not select the row or column headers.

Selecting an example from Help
1. Press CTRL+C.
2. In the worksheet, select cell A1, and press CTRL+V.
3. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
A B
Formula Description (Result)
=FACT(5) Factorial of 5, or 1*2*3*4*5 (120)
=FACT(1.9) Factorial of the integer of 1.9 (1)
=FACT(0) Factorial of 0 (1)
=FACT(-1) Negative numbers cause an error value (#NUM!)
=FACT(1) Factorial of 1 (1)

Applies to:
Excel 2003