What is the Standard Error Calculator?
Calculate the standard error of a mean from standard deviation and sample size. ITS Research Solution keeps the interactive tool above the explanation so you can calculate first and then review the method used.
Formula or method
SE = SD / √n.
How to use this tool
Enter the requested values using consistent units, run the calculation and review the main result plus any supporting values. With SD 12 and n 36, SE = 2.
Interpretation and limitations
The formula assumes the supplied SD and sample size refer to the same sample. Always check source data, units, rounding and discipline-specific requirements before using a result in assessed, published, regulated or high-stakes work.
Frequently asked questions
How is this result calculated?
SE = SD / u221an.
Can I use this result in formal academic or research work?
Use it as a transparent calculation aid, then verify the assumptions, units, rounding and any institution-, journal- or field-specific requirements before formal use.