Range Calculator
Find the minimum, maximum, and range of a data set, along with the count.
How it works
Range is the simplest measure of spread: the largest value minus the smallest. It gives an instant sense of how far apart your numbers stretch without any heavy statistics.
Paste your data and the tool reports the minimum, the maximum, the range between them, and how many values it found, ignoring any stray non-numbers.
It is a fast first look at variability, though because it depends only on the two extremes, a single outlier can stretch it — which is worth remembering when you interpret it.
Frequently asked questions
How do I calculate the range?
Subtract the smallest value from the largest. If your data runs from 4 to 19, the range is 15.
Is range a good measure of spread?
It is quick but crude, since it uses only the highest and lowest values. For a fuller picture, pair it with standard deviation or the interquartile range.
Does an outlier affect the range?
Strongly. Because range depends entirely on the two extremes, one unusually high or low value can inflate it well beyond where most of the data sits.