📊Standard Deviation Calculator

Calculate the mean, variance and standard deviation (sample and population) of a data set.

Enter numbers (separated by commas, spaces or new lines)

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Count

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Mean

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Sum

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Variance (sample)

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Sample SD (s)

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Population SD (σ)

About Standard Deviation

Standard deviation measures how spread out a set of numbers is around the mean. This calculator shows the count, sum, mean and variance, plus both the sample standard deviation (dividing by n − 1) and the population standard deviation (dividing by n). Use the sample version when your data is a sample of a larger group.