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Standard Deviation Calculator

Free standard deviation calculator — enter a data set to get the mean, variance and both population and sample standard deviation, in your browser.

Data set (comma or space separated)

Runs entirely in your browser — nothing you enter is uploaded or stored.

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Frequently asked questions

Is my data uploaded?

No. This calculator runs entirely in your browser — the numbers you enter are never sent to a server. You can verify it in the Network tab or our Content-Security-Policy.

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