Math & Science
Standard Deviation Calculator
Calculate standard deviation and variance
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
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Frequently asked questions
What does the Standard Deviation Calculator do?
It helps you calculate standard deviation and variance.
What inputs do I need?
Enter Values.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Standard Deviation Calculator turns your inputs into practical results. Provide Values to calculate Standard deviation and Mean.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.