Average Calculator
Paste in a list of numbers and get the average instantly. Handles any size list - just separate values with commas or spaces. Also shows the count, sum, min, and max so you get a quick overview at the same time.
How to use
- Type or paste your numbers separated by commas or spaces - as many as you need.
- The average appears right away. You'll also see the count, total sum, min, and max.
Related tools:
The average (arithmetic mean) divides the sum of all values by the count. It is the most commonly used measure of central tendency - your average monthly expense, average test score, average download speed. But it is sensitive to outliers: one unusually large or small value can pull the mean significantly away from most of the data.
For data with outliers, the median (middle value) often tells a more useful story. For skewed distributions like incomes or house prices, the median is typically more representative than the mean. This calculator handles the arithmetic mean; if your use case involves a skewed distribution, check the statistics calculator for median, mode, and standard deviation.
Frequently Asked Questions
What is the difference between mean, median, and mode?
Mean is the sum divided by count. Median is the middle value when sorted. Mode is the most frequently occurring value. For a symmetric distribution they are similar. For skewed data, they diverge - income data often has a mean much higher than the median because a small number of very high earners pull it up.
What is a weighted average?
A weighted average assigns different importance (weights) to different values. GPA uses weighted average - a 3-credit course counts more than a 1-credit course. The formula is sum(value x weight) / sum(weights).
Can the average be a value that does not appear in the data?
Yes, almost always. The average of 1, 2, 3, 4, 5 is 3 which appears in the data. But the average of 1, 2, 4, 5 is 3 which does not. Averages are descriptive statistics - they do not need to be actual data points.