Average Calculator
How to Calculate the Average
The average, or mean, tells you the typical value in a set of numbers. It's quick to work out, and the calculator below also gives the median and mode.
Calculate the average
Mean (average)22
Median25
Mode25
Sum110
Count5
Min10
Max30
Range20
The formula
- Add up all the numbers to get the total (sum).
- Count how many numbers there are.
- Divide the sum by the count.
Worked example
For 10, 20 and 30: the sum is 60 and there are 3 numbers, so the average is 60 ÷ 3 = 20.
The mean can be pulled up or down by very large or small values; that's why the median (middle value) is sometimes a fairer “typical” figure.
Frequently asked questions
How do you calculate the average?
Add all the numbers, then divide by how many there are. For 10, 20, 30: 60 ÷ 3 = 20.
What's the difference between mean and median?
The mean is the sum divided by the count; the median is the middle value when the numbers are sorted. The median is less affected by outliers.
Can the calculator find the median and mode too?
Yes — the calculator above shows the mean, median, mode, range and more.