A free online standard deviation calculator. Enter comma-separated or space-delimited numbers to get the sample standard deviation, population standard deviation, variance, mean, median, mode, min, max, range, Q1, Q3, and interquartile range.
Enter your data set — numbers separated by commas, spaces, or semicolons.
Review descriptive statistics including count, sum, mean, and median.
Check sample and population standard deviation values.
Examine quartile breakdown and interquartile range.
Sample standard deviation (n-1) is used when your data is a sample from a larger population. Population standard deviation (n) is used when your data represents the entire group.
There is no hard limit, but very large data sets (thousands of values) may slow down the browser.
Free online tool — works in your browser, no sign-up required. Start using it right now.
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