This article describes the formula syntax and usage of the STANDARDIZE function (function: A prewritten formula that takes a value or values, performs an operation, and returns a value or values. Use functions to simplify and shorten formulas on a worksheet, especially those that perform lengthy or complex calculations.) in Microsoft Excel.


Returns a normalized value from a distribution characterized by mean and standard_dev.


STANDARDIZE(x, mean, standard_dev)

The STANDARDIZE function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):

  • X    Required. The value you want to normalize.
  • Mean    Required. The arithmetic mean of the distribution.
  • Standard_dev    Required. The standard deviation of the distribution.


  • If standard_dev ≤ 0, STANDARDIZE returns the #NUM! error value.
  • The equation for the normalized value is:



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

ShowHow do I copy an example?

  1. Select the example in this article. If you are copying the example in Excel Online, copy and paste one cell at a time.
    Important: Do not select the row or column headers.

Selecting an example from Help

Selecting an example from Help

  1. Press CTRL+C.
  2. Create a blank workbook or worksheet.
  3. In the worksheet, select cell A1, and press CTRL+V. If you are working in Excel Online, repeat copying and pasting for each cell in the example.
    Important: For the example to work properly, you must paste it into cell A1 of the worksheet.
  4. 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.

After you copy the example to a blank worksheet, you can adapt it to suit your needs.


Data Description
42 Value to normalize
40 Arithmetic mean of the distribution
1.5 Standard deviation of the distribution
Formula Description (Result)
=STANDARDIZE(A2,A3,A4) Normalized value of 42 for the terms above (1.333333)
Applies to:
Excel 2010, Excel Web App, SharePoint Online for enterprises, SharePoint Online for professionals and small businesses