Midrange Calculator
Find the midrange of a data set — the average of its smallest and largest values.
How it works
The midrange is the simplest measure of center there is: add the smallest and largest values and divide by two. It marks the exact midpoint between the two extremes of your data.
This tool scans your numbers, picks out the minimum and maximum, averages them, and reports the result alongside the min, max, and how many values it read.
Because it leans entirely on the two endpoints, the midrange reacts sharply to outliers — one extreme value drags it around. That makes it quick to compute but less trustworthy than the mean or median when your data has stragglers.
Frequently asked questions
How do I calculate the midrange?
Add the smallest value to the largest and divide by two. For data running from 5 to 41, the midrange is (5 + 41) ÷ 2 = 23.
How is midrange different from the mean?
The mean averages every value; the midrange averages only the two extremes. They match for symmetric data but can differ a lot when the values are skewed.
When is the midrange useful?
It's handy for a fast, rough center — say, the midpoint of a temperature range. Just be wary that a single outlier can pull it well away from where most of the data actually sits.