Average (Mean) Calculator
Get the average, sum, count, min and max of a list of numbers.
Paste a list of numbers to instantly get the average (mean), along with the sum, count, smallest and largest values. Separate numbers with commas or spaces.
Formula / method
Examples
25
7
How the mean is calculated
The average, or arithmetic mean, is the sum of all your numbers divided by how many numbers there are. Enter 4, 8 and 12 and you get 24 divided by 3, which is 8. Alongside the mean, this tool reports the running sum, the count of values, and the smallest and largest entries so you can sanity-check the spread at a glance.
It accepts values separated by commas, spaces or new lines, so you can paste a column straight from a spreadsheet without reformatting it first.
Mean versus median
The mean is sensitive to outliers: one unusually large or small value pulls it toward that extreme. For skewed data such as incomes or house prices, the median (the middle value) often describes the 'typical' figure better than the mean.
Everything is computed locally in your browser, so long or sensitive lists never leave your device. For share-of-total questions instead of averages, the Percentage Calculator is a better fit.
Where it's used
- Averaging a set of exam or assignment grades
- Finding mean monthly expenses or income across several months
- Averaging repeated sensor or measurement readings in an experiment
- Computing an average review rating for a product or service
- Working out average speed, temperature, or sales over a period
Real-world examples
- A student averaging test scores of 88, 92, 79, and 95 to get 88.5
- Averaging six months of electric bills to set a monthly budget
- Finding the mean of a week's daily high temperatures
- Averaging 20 product ratings to arrive at a 4.3-star score
Did you know?
A single extreme value can badly skew the mean, which is why figures like income or home prices are usually reported as a median instead; the classic illustration is that when a billionaire walks into a bar, the average net worth of everyone inside jumps into the millions.
FAQ
Which average does this calculate?
It calculates the arithmetic mean — the sum of all numbers divided by how many there are.