Calculate the average of multiple numbers quickly and easily. Enter your numbers to find the mean, sum, minimum, and maximum.
Enter your numbers to calculate the average.
The arithmetic average, also called the mean, is a single number that sums up a whole list of numbers. It's calculated by adding all the values together and dividing the total by how many values there are — a quick way to describe a "typical" value for a set of numbers.
| Numbers | Average |
|---|---|
| 5, 10, 15 | 10 |
| 10, 20, 30, 40 | 25 |
| 12.5, 15.5, 20 | 16 |
| −10, 20, 30 | 13.333333 |
In everyday conversation, "average" almost always means the arithmetic mean — add everything up, divide by how many there are. Statisticians also talk about other kinds of average, like the median and the mode, which describe a data set in different ways. This calculator specifically computes the arithmetic mean, which is what most people mean when they ask for "the average."
These three terms are all "types of average," but each describes a data set differently. For the numbers 2, 3, 3, 4, 8:
| Term | Definition | Result |
|---|---|---|
| Mean | The sum of values divided by the number of values. | 4 |
| Median | The middle value when the numbers are arranged in order. | 3 |
| Mode | The value that appears most frequently. | 3 |
This calculator always computes the mean — the most commonly requested type of average.
An average calculator is useful any time you need a quick, reliable summary of a list of numbers, such as:
Calculating average test scores, working out average monthly expenses, finding the average price of similar items, calculating an average customer rating, analyzing a simple set of data, or averaging repeated measurements like temperature or weight readings.
An average (or arithmetic mean) is a single number that represents the typical value in a set of numbers — found by adding all the values together and dividing by how many there are.
Add all the numbers together, then divide the total by how many numbers you added. For example, the average of 10, 20, and 30 is (10 + 20 + 30) ÷ 3 = 20.
Average = Sum of Values ÷ Number of Values.
In everyday use, yes — "average" almost always refers to the arithmetic mean. Median and mode are other types of average used in statistics, but this calculator computes the arithmetic mean.
Yes. Negative numbers are added into the total like any other value, so they lower the average accordingly.
Yes. The calculator accepts decimal values and returns a precise decimal result, rounded to a readable number of places.
The average of a single number is that number itself, so the calculator simply returns it.
Mean is the sum of values divided by how many there are. Median is the middle value once the numbers are sorted. Mode is the value that appears most often. This calculator computes the mean.
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