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How to calculate standard error of the mean in Excel?

Author: Kelly Last Modified: 2025-04-15

The standard error of the mean is a key statistic in understanding sampling distributions. In this article, we’ll show you how to calculate it in Excel using a simple formula that incorporates the standard deviation and sample size.

Calculate standard error of the mean in Excel

Calculate standard error of the mean in Excel

As you know, the Standard Error = Standard deviation / square root of total number of samples, therefore we can translate it to Excel formula as "Standard Error = STDEV(sampling range)/SQRT(COUNT(sampling range))".

For example, your sampling range is paced in the Range B1:G4 as below screenshot shown. You can select the cell you will place the calculated result, type the following formula, and press the "Enter" key.

=STDEV(B1:G4)/SQRT(COUNT(B1:G4))
A screenshot showing an Excel worksheet with the formula to calculate the standard error of the mean applied to a data range

Now you can see the calculated standard error of the mean, as shown in the screenshot below:
A screenshot of the result showing the calculated standard error of the mean in Excel

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