▣ CALCULATORS Updated July 25, 2026

Standard Deviation Calculator

Standard deviation, variance, and mean from a data set.

Numbers
Result
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How it works

Values are parsed from commas, spaces, or new lines. Both the sample standard deviation (n − 1) and the population value (n) are shown.

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Frequently asked questions

Sample or population?

Use the sample value when your numbers are a subset of a larger group, and the population value when they are the whole group.

What separators can I use?

Commas, spaces, tabs, and line breaks all work.

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