Standard Deviation Calculator

Calculate population and sample standard deviation and variance.

How to Use This Calculator

  1. Enter your Data Set.
  2. Click Calculate to see instant results with a step-by-step breakdown.
  3. Use the Share button to copy a link with your inputs pre-filled.

⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.

Mean Calculator
Calculate the arithmetic mean (average) of a data set.…
Correlation Coefficient Calculator
Calculate Pearson r correlation coefficient from two data sets.…
Variance Calculator
Calculate population and sample variance from a data set.…
Combination Calculator
Calculate nCr — unordered selections of r items from n.…