How the result is calculated
The tool supports learning and checking work. Show intermediate steps where required and follow the conventions used by your course or instructor.
σ Standard Deviation Calculator
Calculate population and sample standard deviation.
Enter values and calculate.
Formula or method
Standard Deviation measures typical distance from the mean
Results are estimates based on the values entered. Review assumptions before making consequential decisions.
Frequently asked questions
Does this tool store my values?
Values may be saved only in local browser storage for convenience. They are not sent to an IKDHub account.
Should I independently verify the result?
Yes. Verify consequential results with authoritative sources or a qualified professional.
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Last reviewed 2026-07-26. Educational use only; verify important decisions with a qualified professional or authoritative source.