Calculate mean, median, mode, standard deviation and more
Drop in a dataset and get a full statistical summary in seconds. This tool computes mean, median, mode, standard deviation, variance, range, quartiles, and more. Whether you are analyzing survey responses, lab measurements, or sales figures, you get the numbers you need without writing formulas or opening a spreadsheet.
Related reading
Initializing in your browser…
You have a small sample of measurements and need the mean, median, and spread without opening a stats package.
Data
4, 8, 6, 5, 3, 9
Results
mean 5.83 median 5.5 range 6 variance 4.47 SD 2.11 Q1 4 · Q3 8 · IQR 4
Mean is the sum (35) over the count (6); median is the average of the two middle values once sorted (5 and 6). It reports the population standard deviation alongside quartiles and the interquartile range, so you see the spread the mean alone hides.
Drop in a dataset and get a full statistical summary in seconds. This tool computes mean, median, mode, standard deviation, variance, range, quartiles, and more. Whether you are analyzing survey responses, lab measurements, or sales figures, you get the numbers you need without writing formulas or opening a spreadsheet.
Beyond basic descriptive statistics, the calculator derives Pearson skewness to characterize the shape of your distribution and draws a distribution histogram (binned with Sturges' rule) with the mean marked. It flags outliers using the 1.5xIQR rule, reports the coefficient of variation and geometric mean, and includes a z-score and percentile lookup for any value you enter. Quartile values (Q1, Q3) and the interquartile range round out the spread metrics. Results update instantly as you add, remove, or edit data points, so iterative analysis is seamless.
Summarize experimental data quickly before running deeper analysis in specialized software.
Compute averages, spreads, and percentiles for KPIs, sales data, or customer metrics.
Check process measurements against tolerance ranges using mean, standard deviation, and range.
Verify hand-calculated statistics homework answers against the tool's output.
It reports the population standard deviation, which divides by N (the total count). If you need the sample standard deviation (dividing by N-1), apply that correction to the reported value.
There is no hard limit. Performance stays snappy for typical datasets of several thousand values.
Yes. Copy a column from Excel or Google Sheets and paste it directly into the input field.
Every calculation runs locally in your browser. Your numbers and expressions are not transmitted or stored.