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Average Calculator

Paste a list of numbers to get the average (mean), median, mode, range, sum and standard deviation. Free average calculator for grades, scores and data.

Separate numbers with commas, spaces or new lines. You can paste a column from a spreadsheet.

Average (mean)
18.6667
Median
16.5
Mode
15
Range
18
Sum
112
Count
6
Smallest
12
Largest
30
Standard deviation (population)
5.9348
Standard deviation (sample)
6.5013

Mean, median and mode explained

The mean is what most people call the average: add up the numbers and divide by how many there are. The median is the middle value once the numbers are sorted, which isn't pulled up or down by one extreme value, so it's often a better 'typical' figure for prices and salaries. The mode is the value that appears most often. The calculator also shows the range, the sum, the smallest and largest values and the standard deviation, which tells you how spread out the numbers are.

How to use it

  1. 1

    Enter your numbers

    Type or paste them, separated by commas, spaces or new lines.

  2. 2

    Check the count

    Make sure the count matches the number of values you meant to enter.

  3. 3

    Read the results

    The mean, median, mode and the other statistics update as you type.

Frequently asked questions

How do I calculate an average?

Add all the numbers and divide by how many there are. The average of 4, 8 and 12 is 24 ÷ 3 = 8.

What's the median of an even number of values?

The average of the two middle values. For 3, 5, 7, 9 it's (5 + 7) ÷ 2 = 6.

Which standard deviation should I use?

Use the sample standard deviation when your numbers are a sample from a bigger group, and the population one when they're the whole group.

Is anything sent to a server?

No. Everything is calculated in your browser, and nothing you type is stored or sent anywhere.

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