How to Find the Average of a List of Numbers
The average, or mean, is the total divided by the count. This guide walks through the calculation and shows how to check it.
What is the Average Calculator?
Type your numbers separated by commas and the tool adds them up and divides by how many there are. That division gives the mean, the usual everyday meaning of average, and the tool also shows the sum and the count so you can check the working.
How to use it
- Type your numbers separated by commas.
- Use decimals if you need them, for example 2.5, 4, 7.
- Calculate to see the average, the total and how many numbers you entered.
Worked example
10, 20, 30, 40 gives a sum of 100, a count of 4 and an average of 25.
What is the average of 10, 20, 30 and 40?
Add them to get 100, then divide by how many numbers there are, which is 4. That gives 25. So the average of 10, 20, 30 and 40 is 25.
Frequently asked questions
Do I need to sort my numbers first?
No. The order makes no difference to an average, so enter them in any order.
Can I include negative numbers?
Yes. Negative numbers are included in the total and the count just like any other number.