Average Calculator

Paste a list of numbers to get the mean, median, mode, range, count, sum, and standard deviation at once. Calculates in your browser.

Separate values with commas, spaces, or new lines.

Mean (average)

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Median-
Mode-
Range-
Smallest / largest-
Count-
Sum-
Std dev (sample)-
Std dev (population)-

Show the math

mean = (sum of values) ÷ (how many values)

The median is the middle value once sorted (the average of the two middle values for an even count). The mode is the most frequent value. The range is the largest minus the smallest.

Sample standard deviation divides by n − 1 (use it for a sample drawn from a larger group); population standard deviation divides by n (use it when your numbers are the whole group).

What this does

An average calculator takes a list of numbers and returns the mean, median, mode, range, count, sum, and standard deviation at once, so you can summarise a data set without a spreadsheet.

How to use it

  1. Paste or type your numbers, separated by commas, spaces, or new lines.
  2. Anything that is not a number is ignored.
  3. Read the mean, median, mode, and spread.

How it works

The mean is the sum divided by the count. The median is the middle value once sorted, and the mode is the most frequent value. Standard deviation measures spread, use the sample version for a sample, the population version for a whole group.

Understanding your result

The mean, median, and mode can disagree, and the gap between them reveals the shape of your data. A mean pulled far from the median signals outliers or skew, where the median is the fairer summary. Standard deviation then tells you how tightly the values cluster around that centre.

Example

For 2, 4, 4, 6, 8 the mean is 4.8, the median is 4, and the mode is 4, a quick way to see the centre and shape of the data.

Sources & methodology

Last updated .

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 once sorted. The mode is the value that appears most often. A skewed list can have a very different mean and median.

How do I enter my numbers?

Type or paste them separated by commas, spaces, or new lines. Anything that is not a number is ignored.

Which standard deviation should I use?

Use the sample version (divides by n − 1) when your numbers are a sample of a larger group, and the population version (divides by n) when they are the entire group.

Is my data stored?

No. Everything is calculated locally in your browser.