Five Number Summary Calculator
Find the min, quartiles, median, and max of a data set.
Five numbers that describe data
The five number summary — minimum, Q1, median, Q3, maximum — captures the shape of a data set in a handful of robust figures. It is exactly what a box plot draws.
For the set shown, it lays out the smallest and largest values, the median in the middle, and the quartiles that bound the central half. Together they reveal center, spread, and skew at a glance.
Complete and private
The calculation runs in your browser, so your data is never uploaded.
Frequently Asked Questions
What is the five number summary?
The minimum, first quartile, median, third quartile, and maximum — the basis of a box plot.
Why is it useful?
It summarizes a data set’s center and spread in five robust numbers, resistant to outliers.
Which quartile method?
Tukey’s hinges, which exclude the median when splitting the halves.
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