Average Calculator
This average calculator finds the mean of any list of numbers, and it gives you the median, mode, and range at the same time. Just paste or type your numbers, separated by commas, spaces, or new lines, and the answers update as you go, with a little bar chart so you can see the spread. It's built for grades, scores, prices, or any set of values you've got to summarize.
- Mean, median, mode, range
- Paste any list
- Sum and count
- Live bar chart
- Steps shown
Last updated June 16, 2026 Mean = sum ÷ count Reviewed by the Calcowa math team
Separate with commas, spaces, or new lines. Decimals and negatives are fine.
Enter at least one number to see the results.
(10 + 15 + 15 + 20 + 25) ÷ 5 = 85 ÷ 5 = 17
What is the average?
The average, or mean, is the single number that best stands in for a whole list. You find it by adding every value and dividing by how many there are. So the average of 10, 15, 20 is 45 ÷ 3 = 15. It's the figure people usually mean by "average", and it's handy for a quick sense of a typical grade, price, or score.
How do you calculate the average?
Here's how to find the average of 10, 15, 15, 20, 25:
- 1
Add them up10 + 15 + 15 + 20 + 25 = 85.
- 2
Count themThere are 5 numbers.
- 3
Divide85 ÷ 5 = 17, so the average is 17.
Mean, median, mode, and range
An average isn't just one thing. These four measures each describe a list in their own way, and the calculator hands you all of them at once, so you don't pick just one.
| Measure | How to find it | What it tells you |
|---|---|---|
| Mean (average) | Add them all up, divide by how many | The typical value, but pulled by outliers |
| Median | The middle value when sorted | The true middle, ignores extreme values |
| Mode | The value that appears most often | The most common entry, if there is one |
| Range | Largest minus smallest | How spread out the numbers are |
When to use the median instead of the mean
The mean's great until a few extreme values throw it off. Picture incomes where most people earn around 40,000 but one person earns 5 million. The mean shoots up and doesn't describe anyone, while the median, the middle value, stays grounded near the typical figure. So for skewed data like prices, salaries, or house values, the median is often the fairer "average". The calculator shows both, so you'll pick the one that fits.
Grade and test averages
A grade or test average is just the mean of your scores: add them up and divide by how many tests you took. Paste your scores above and you've got it. One thing to watch is weighting. If a final exam counts for more than a quiz, you need a weighted average, where each score is multiplied by its weight before dividing. For plain, equally weighted scores, the mean here is exactly what you're after.
Frequently asked questions
Is the average the same as the mean?
In everyday use, yes. When people say "average" they're almost always after the mean: the sum divided by the count. Strictly, the median and mode are also kinds of average, which is why this tool shows all of them.
Add all the numbers together, then divide by how many numbers there are. For 10, 15, 20, the sum is 45 and there are 3 numbers, so the average is 45 ÷ 3 = 15. That kind of average is called the mean, and the calculator does it the moment you've pasted your numbers.
The mean's the sum divided by the count, the median is the middle value when the numbers are sorted, and the mode is the value that shows up most often. They're often different, especially when a few very large or very small numbers pull the mean away from the middle.
Use the median when a few outliers would skew the mean, like house prices or incomes, where one huge value drags the average up. The median sits in the middle and ignores how extreme the ends are, so it often describes a typical value better.
Subtract the smallest number from the largest. If your numbers run from 8 up to 25, the range is 25 − 8 = 17. The range shows how spread out the data is, and the calculator lists the smallest and largest for you, so you don't subtract by hand.
Yes. If two or more values tie for the most appearances, the set has several modes, and it's called bimodal or multimodal. If every number appears once, there's no mode at all, and the calculator says so.
Add up your scores and divide by the number of tests, which is just the mean. If some tests count for more, that's a weighted average instead, where each score is multiplied by its weight before you divide. Paste your scores above for a quick mean.
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