Mean, Median, Mode & Range Calculator
Enter a list of numbers (comma or line separated) to calculate the mean, median, mode, and range.
Last updated: September 5, 2026
Frequently asked questions
What's the difference between mean, median, and mode?
Mean is the arithmetic average (sum ÷ count). Median is the middle value when sorted. Mode is the most frequently occurring value. They can all differ, especially with skewed data or outliers.
Why would I use median instead of mean?
Median is more resistant to outliers - a single extreme value can pull the mean far from where most of the data actually sits, while the median stays anchored to the middle of the sorted data regardless of how extreme the outliers are.
Can a data set have more than one mode?
Yes - if two or more values tie for the highest frequency, the data set is "multimodal" and all of them are reported as modes. If every value appears exactly once, there's no meaningful mode.
What does range tell you that mean or median doesn't?
Range measures the spread of the data (maximum minus minimum), while mean and median describe its center - two data sets can have identical means but very different ranges, reflecting very different amounts of variability.
How does this calculator find the median for an even number of data points?
It averages the two middle values after sorting the data. For the set 2, 4, 6, 8, the two middle numbers are 4 and 6, so the median is (4+6)/2 = 5.
What is the mean, median, and mode of 3, 7, 7, 9, 100?
Mean = (3+7+7+9+100)/5 = 25.2. Median (middle of sorted list) = 7. Mode = 7 (appears twice). Notice how the single outlier (100) pulls the mean well above the median and mode.
Do I need to sort my numbers before entering them?
No - this calculator sorts the data automatically to find the median and identify the range's minimum and maximum, so you can paste numbers in any order, separated by commas or line breaks.