Standard Deviation Calculator

Enter numbers separated by comma and click the ‘Calculate’ button to calculate the standard deviation.


Standard Deviation (SD)
Population Standard Deviation (PSD)
Variance (SD)
Variance (PSD)


Standard deviation is a measure used to quantify the amount of variation or dispersion of a set of data values.
When the standard deviation is close to 0 it means that the data points are close to the mean, while in case of high standard deviation in means that the data points are spread out over wide range of values.