Skewness Calculator
Bars update as you type.
How this is calculated
For Fisher–Pearson calculations, m₂ and m₃ use central moments with n in the denominator. The adjusted sample coefficient applies the small-sample correction √[n(n−1)]/(n−2). Pearson’s second coefficient uses the sample standard deviation. Bowley/Galton skewness uses linearly interpolated Q1, median, and Q3.
This Skewness Calculator helps researchers, students, and data analysts quickly measure whether a dataset is approximately symmetric or has a longer left or right tail. Paste raw numerical data to calculate the adjusted sample skewness, Fisher–Pearson moment skewness, Pearson’s second coefficient, or Bowley/Galton quartile skewness, while also reviewing the mean, median, standard deviation, range, interpretation, and an automatically generated histogram. Because the calculations run entirely in your browser, the tool is fast, private, and useful for exploratory data analysis, descriptive statistics, research reports, and checking distribution shape before selecting statistical methods.
