Standard Deviation Calculator

Population and sample deviation with variance

Population and sample deviation with variance

Numbers (comma or newline separated)

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Standard Deviation Calculator FAQ

Is Standard Deviation Calculator free to use?

Yes, this tool is completely free. There are no fees, subscriptions, or limits — open the page and use it as much as you like.

Does Standard Deviation Calculator upload my data?

No. Standard Deviation Calculator runs entirely in your browser on your own device. Your text and numbers never leave your computer.

Does Standard Deviation Calculator work on mobile?

Yes. The tool is fully responsive and works on Android, iPhone, tablets, laptops, and desktop computers.