Free Mean, Median & Mode Calculator

Runs entirely in your browser - no upload, no sign-up.

Data set

Your numbers

Paste or type numbers separated by commas, spaces, or new lines.

Mean (average)-Enter numbers to see the mean, median and mode

Median-

Mode-

-Count

-Sum

-Range

-Minimum

-Maximum

-Std dev (sample)

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How do you find the mean, median and mode?

The mean is the sum of all values divided by how many there are, the median is the middle value when the numbers are sorted, and the mode is the value that appears most often. This free calculator finds all three from your list at once, plus the range, sum, count, minimum, maximum and standard deviation - entirely in your browser.

How to use

1Enter your numbers. Paste or type your values into the box - separated by commas, spaces, or new lines. Decimals and negative numbers are fine.
2Read the averages. The mean, median and mode appear immediately at the top, with the count, sum, range, minimum, maximum and standard deviation in the grid below.
3Copy the results. Use Copy results to grab every statistic as text, ready to paste into your homework, report, or spreadsheet.

Who it's for

Students checking mean, median and mode for a maths or statistics assignment without a graphing calculator or spreadsheet.
Teachers demonstrating how the three averages differ - and how an outlier pulls the mean but not the median - with live numbers a class can change.
Analysts getting a quick summary of a small data set (sum, average, spread) before pasting it into a report.
Anyone averaging test scores, prices, times or measurements and wanting the middle value and most common value too.
Spreadsheet users who want the same answers as Excel's AVERAGE, MEDIAN and MODE functions with the count, range and standard deviation shown side by side.

Everything runs locally. Your numbers are parsed in the browser, the statistics are computed on the page, and nothing is uploaded or stored. Enter as many values as you like, separated by commas, spaces or new lines; the results update as you type and work offline once the page has loaded.

Expert tip

The three averages answer different questions, and the gap between them is itself informative. The mean uses every value, so a single outlier (one very large or very small number) drags it away from the bulk of the data - which is exactly why median household income is reported instead of mean income. The median ignores how extreme the outliers are and reports the true middle, so when the mean and median differ a lot, your data is skewed. The mode is the only average that also works for non-numeric categories, and a data set can have no mode (all values unique) or several (multimodal) - this tool flags both cases instead of hiding them. For spread, note that the sample standard deviation shown here divides by n-1 (matching Excel's STDEV and most statistics courses), while the population figure divides by n; use the sample one unless your list is the entire population.

FAQ

Is the mean median mode calculator free?

Yes - 100% free, no sign-up, and no limit on how many numbers you enter. The whole calculation runs in your browser and your data is never uploaded.

What is the difference between mean, median and mode?

The mean is the arithmetic average (add everything up, divide by the count). The median is the middle value once the numbers are sorted. The mode is the value that occurs most frequently. They can all be different - for example {1, 2, 2, 9} has a mean of 3.5, a median of 2, and a mode of 2.

How is the median found for an even number of values?

When there is an even count, there is no single middle value, so the median is the average of the two middle numbers after sorting. For {2, 4, 6, 8} the two middle values are 4 and 6, so the median is 5.

Can a set of numbers have more than one mode?

Yes. If two or more values tie for the highest frequency, the data is multimodal and this calculator lists every mode. If every value appears the same number of times (for example all unique), there is no mode, and the tool says so rather than picking one arbitrarily.

What does this calculator work out besides the averages?

Along with mean, median and mode it shows the count, sum, minimum, maximum, range (max minus min), and both the sample and population standard deviation and variance - the full summary for a small data set.

Which standard deviation should I use, sample or population?

Use the sample standard deviation (dividing by n-1) when your numbers are a sample drawn from a larger group - this is what Excel's STDEV and most statistics courses use. Use the population value (dividing by n) only when your list is the entire population you care about.

Does this match Excel's AVERAGE and MEDIAN functions?

Yes. The mean matches Excel's AVERAGE, the median matches MEDIAN, and the sample standard deviation matches STDEV. The mode matches MODE.MULT (Excel can return several modes too).