Standard Deviation Calculator

All tools

Enter a data set to compute the sample and population standard deviation, variance and mean. Robust parsing handles commas, spaces and new lines. Free and instant.

Separate values with commas, spaces or new lines.
Sample std. deviation (s) –
Population std. deviation (σ) –
Sample variance (s²) –
Population variance (σ²) –
Mean –
Count –
Sample statistics divide by n−1 (Bessel's correction); population statistics divide by n. Sample values need at least two data points.
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