PHI function

This article describes the formula syntax and usage of the PHI function in Microsoft Excel.


Returns the value of the density function for a standard normal distribution.



The PHI function syntax has the following arguments.

  • X    Required. X is the number for which you want the density of the standard normal distribution.


  • If x is a numeric value that is not valid, PHI returns the #NUM! error value.
  • If x is using a data type that is not valid, such as a nonnumeric value, PHI returns the #VALUE! error value.


The workbook below shows examples of this function. Inspect them, change existing formulas, or enter your own formulas to learn how the function works.

To work more in-depth with the example data in Excel, download the embedded workbook to your computer, and then open it in Excel.

Top of Page Top of Page

Applies to:
Excel 2013, Excel Online