Average Calculator (Mean, Median, Mode)
Find the mean, median, mode, range, sum and standard deviation of a list of numbers.
Average calculator
Separate numbers with commas, spaces, new lines or semicolons. Use a period for decimals.
Mean (average)
5
8
Count
40
Sum
4.5
Median
4
Mode
2
Smallest
9
Largest
7
Range
2
Std. deviation (population)
2.13809
Std. deviation (sample)
Private: Everything runs in this page. Nothing you type is sent anywhere or saved.
On this page
Average examples
| Numbers | Mean | Median |
|---|---|---|
| 2, 4, 4, 4, 5, 5, 7, 9 | 5 | 4.5 |
| 1, 2, 3, 4 | 2.5 | 2.5 |
| 10, 20, 30 | 20 | 20 |
| 5 | 5 | 5 |
| 3.5, 7.25 | 5.375 | 5.375 |
Formula
mean = sum of the numbers / how many numbers there are
How the average calculator works
- Step onePaste or type your numbers, separated by commas, spaces, line breaks or semicolons: 1,2,3 and 1, 2, 3 are both three numbers. In this list a comma always separates numbers, so write thousands without commas (1000, not 1,000, which would be read as 1 and 0), and write decimals with a period (1.5).
- Step twoThe mean, median and the other measures update as you type.
- Step threeRead the mean first, then the median and mode for a fuller picture.
What this tool does not do
- It reads plain numbers only; units, currency signs and percent signs must be removed first.
- Separate numbers with commas, spaces, new lines or semicolons. A comma always separates numbers in this list, so write thousands without commas (1000, not 1,000) and decimals with a period (1.5).
- If a comma sits between digits with no space (1,000 or 1,5), the tool tells you how it was read.
- Text that is not a number is reported, not skipped.
- It does not weigh values, so it gives the ordinary mean, not a weighted average.
Frequently asked questions
What is the difference between mean, median and mode?
The mean is the sum divided by the count, the median is the middle value when the numbers are in order, and the mode is the value that appears most often.
Which standard deviation should I use?
Use the population value when your list is every value you care about, and the sample value when the list is a sample drawn from a larger group.
What if there is no mode?
When every number appears once, the tool shows none.