Average Calculator

Input numbers below. Each number in its own row (max. 500):



The counter calculates the following: count of numbers, standard deviation, average. In addition, you get the numbers arranged from the smallest to the largest. Separate numbers by newline. Click the 'Calculate' button to get the result. For example, you can easily calculate the average grade of a school certificate. The average is calculated by summing all the numbers and dividing the result by the count of numbers. Standard deviation is also a useful indicator. It is a measure of how much the numbers differ from the average.

How is the average (mean) calculated?

The average (mean) is calculated by adding the numbers together and dividing the result by the number of numbers. For example, let's take the numbers 4, 5, 9 and 10. The sum of these numbers is 4 + 5 + 9 + 10 = 28. The obtained sum 28 is divided by the number of numbers, i.e. four. This gives 28 / 4 = 7. The average of numbers 4, 5, 9 and 10 is therefore 7.