The Excel NORMSDIST Function

Standard Normal Cumulative Distribution

The Standard Normal Cumulative Distribution is a simplified version of the Normal Cumulative Distribution Function which arises when the mean of the distribution is 0 and the standard deviation is 1.

Therefore, the Excel Normsdist function is the same as the Normdist function with the mean, standard_dev and cumulative arguments set to 0, 1 and TRUE respectively.

This Standard Normal Cumulative Distribution function is shown in the graph below:

Plot of Standard Normal Cumulative Distribution Function


In Excel 2010, the NORMSDIST function has been replaced by the NORM.S.DIST function.

The new Norm.S.Dist function in Excel 2010 has been improved, in that it can calculate the both the probability density function and the cumulative distribution function, whereas the Normsdist function only calculates the cumulative distribution function.

However, the Normsdist function is still available in Excel 2010 (stored in the list of compatibility functions), to allow compatibility with earlier versions of Excel.

Basic Description

The Excel NORMSDIST function calculates the Standard Normal Cumulative Distribution Function for a supplied value.

The format of the function is :


Where z is the value at which you want to calculate the function.

Normsdist Function Examples

The spreadsheet below shows examples of the Excel Normsdist Function, used to calculate the Standard Normal Cumulative Distribution Function for 3 different values.

The formulas are shown in the spreadsheet on the left and the results are shown in the spreadsheet on the right.

Examples of use of the Excel Normsdist Function
Excel Normsdist Function Results

Further information and examples of the Excel Normsdist function can be found on the Microsoft Office website.

Normsdist Function Error

If you get an error from the Excel Normsdist function this is likely to be the #VALUE! error:

Common Error
#VALUE! - Occurs if the supplied argument is not recognised as a numeric value
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