Mean Median Mode Calculator
This free mean median mode calculator finds the average (mean), middle value (median), most common value (mode) and range of any list of numbers — instantly, on any device. Type or paste your numbers and get the full breakdown: count, sorted list, minimum and maximum included.
Enter your numbers
Your results
Results update instantly as you type. All calculations happen in your browser — your numbers are never sent anywhere.
How to use this calculator
Type or paste your numbers into the box above. You can separate them with commas, spaces, semicolons or line breaks — whatever is easiest. Decimals and negative numbers are fine.
The results update automatically as you type, so there is nothing to submit. The top panel shows the four headline statistics — mean, median, mode and range — and the table below adds the count, sum, minimum, maximum and the fully sorted list.
To start over, just delete the text or paste a new set of numbers. If anything you typed cannot be read as a number, an error message will tell you exactly which entries are the problem.
How it works
Mean is the arithmetic average: add all the values together (Σx) and divide by how many values there are (n). For 3, 7, 7, 9, 12: (3 + 7 + 7 + 9 + 12) ÷ 5 = 38 ÷ 5 = 7.6.
Median is the middle value of the sorted list. With an odd count, take the exact middle; with an even count, average the two middle values — so the median of 2, 4, 6, 8 is (4 + 6) ÷ 2 = 5.
Mode is the value that appears most often. This calculator lists every tied value when there are several (multimodal), and reports "no mode" when every value appears exactly once.
Range is the simplest measure of spread: maximum minus minimum. Assumptions: values are treated as ordinary decimal numbers with equal weight (no weighting option), sorting is plain numeric order, and displayed results are rounded to at most 4 decimal places. These are exact statistics of the data you entered — not estimates.
Frequently asked questions
How do you find the mean of a set of numbers?
Add all the values together, then divide by how many values there are. For example, the mean of 3, 7, 7, 9 and 12 is 38 divided by 5, which equals 7.6.
What is the difference between mean and median?
The mean is the average: the sum of all values divided by how many there are. The median is the middle value when the numbers are sorted. The median is less affected by very large or very small values, so it can be a better 'typical' number when the data has outliers.
What if there are two or more modes?
The mode is the value that appears most often. If two or more values tie for the most appearances, all of them are modes. For example, the data set 2, 4, 4, 6, 6, 8 has two modes: 4 and 6. If every value appears exactly once, there is no mode.
Can the median be a number that is not in the data set?
Yes. When a data set has an even number of values, the median is the average of the two middle values. For example, the median of 2, 4, 6 and 8 is 4 plus 6, divided by 2, which equals 5 — a number that was not in the original data.