Looking for a average calculator mean median sum of numbers? This free tool gives you average, sum, count, minimum and maximum in one go. Just enter your numbers and press Calculate — results are instant.
The average (mean) is the sum of all your numbers divided by how many there are. It is the simplest summary of a list, and the calculator also shows the sum, the count, and the smallest and largest values, which together tell you much more than the average alone. Watch out for outliers: one very large or very small number can drag the average away from where most of the numbers sit.
Example: Numbers: 10, 20, 30, 40
Average: 25.0000
The mean is the ordinary average; the median is the middle value when the numbers are sorted. The median is better when a few very large or small values would drag the mean away from the typical value — like house prices or salaries.
Yes, if it is far from the rest. That is why the calculator also shows the minimum and maximum: together with the count they show whether the average is telling the whole story.
Not directly. To combine averages from different groups you must weight them by how many numbers are in each group, or the result will be wrong.