Midrange Calculator

The midrange is a measure of center equal to the average of the smallest and largest value in a data set, (min + max) divided by 2. It uses only the two extremes, which makes it very quick to compute.

The mean averages every value and the median is the middle value, so both use all of the data. The midrange ignores everything except the lowest and highest value, which makes it fast but very sensitive to outliers.

The range is max minus min and measures spread, while the midrange is the average of max and min and measures center. They are related but answer different questions, so this calculator shows both.

It is handy for a fast estimate of the center, for the midpoint of a forecast band, or in fields like meteorology where the daily mean temperature is often taken as the midrange of the high and the low.

Because it depends only on the minimum and maximum, a single extreme value moves the midrange directly. For data with outliers, the median is usually a more robust measure of center.