Variance Calculator
Use the free online Variance Calculator tool. Fast, private and easy to use — runs entirely in your browser. Part of our Statistics Calculators collection.
Median & Mode Calculator
Find the median, mode, sum, count, minimum and maximum of any list of numbers.
Standard Deviation Calculator
Get both the population and sample standard deviation of a data set, with the mean shown for context.
Variance Calculator
Measure how spread out a data set is with population and sample variance.
Z-Score Calculator
See how many standard deviations a value lies from the mean with z = (x − μ) / σ.
Permutation & Combination Calculator
Count arrangements and selections instantly — nPr for ordered picks and nCr for unordered ones.
Range Calculator
Find the range of a data set — the difference between its largest and smallest values.
Coefficient of Variation Calculator
Compare the relative spread of data sets with CV = σ / μ expressed as a percentage.
Midrange Calculator
Compute the midrange — the midpoint between the minimum and maximum of a data set.