Average Calculator
Paste or type a list of numbers to get the average (mean) instantly, along with the sum, median, mode, minimum, maximum, and range.
| Median | 18 |
| Mode | 18 |
| Minimum | 9 |
| Maximum | 30 |
| Range | 21 |
How to use this calculator
Enter your numbers separated by commas, spaces, or new lines. The calculator shows the average (mean), sum, and count up top, plus the median, mode, min, max, and range below.
How the average works
The average, or arithmetic mean, is the sum of all values divided by how many values there are. It's the most common measure of a "typical" value, though the median is often better when a few very large or very small numbers would skew the mean.
Worked example
For 12, 18, 24, 30, 18, 9: the sum is 111 and the count is 6, so the mean is 111 ÷ 6 = 18.5. The median is 18, the mode is 18 (it appears twice), and the range is 30 − 9 = 21.
The formula
Mean = (sum of all values) ÷ (number of values)
Frequently asked questions
How do you calculate the average?
Add up all the numbers, then divide by how many numbers there are. The average (mean) of 12, 18, and 24 is (12+18+24) ÷ 3 = 18.
What's the difference between mean, median, and mode?
The mean is the sum divided by the count. The median is the middle value when the numbers are sorted. The mode is the most frequently occurring value. This calculator shows all three.
What is the range?
The range is the difference between the largest and smallest numbers. For 9, 18, 30 the range is 30 − 9 = 21. It's a quick measure of how spread out the data is.
Can I paste a column of numbers?
Yes. You can separate values with commas, spaces, or new lines, so pasting a column from a spreadsheet works fine.