01
A six-number list
4, 8, 15, 16, 23, 42 gives a mean of 18, a median of 15.5, no repeating mode, and a population standard deviation of about 12.31.
Statistics Calculator
CalculatorsCalculate mean, median, mode, range, variance and standard deviation online — free and instant.
About
About the Statistics Calculator
Reads a list of numbers and works out the count, sum, mean, median, mode, range, variance and standard deviation in one click.
Students checking homework use it to verify a mean or standard deviation by hand, while anyone analyzing a small data set uses it to get a full statistical summary without opening a spreadsheet. It's one of many free calculators on Toolapt, and like every tool here, it's free to use with no sign-up and no limit on how many times you run it.
Examples
Statistics Calculator examples
3 worked examples
02
A list with a repeated value
2, 4, 4, 6, 8 has a mean of 4.8, a median of 4, and a mode of 4 since it's the only value that repeats.
03
A single number
With just one number entered, the mean equals that number and the range is 0 — sample variance and standard deviation need at least two numbers, so they show a dash.
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FAQ
Frequently asked questions
Quick answers to common questions about the Statistics Calculator.
What does the Statistics Calculator do?
It calculates the count, sum, mean, median, mode, minimum, maximum, range, variance and standard deviation for a list of numbers you enter.
Is the Statistics Calculator free to use?
Yes. It's free, with no sign-up, no watermark and no limit on how many times you use it.
Is my data safe when I use this tool?
Yes. The numbers you enter are processed entirely on your own device — nothing is sent to a server.
What does it mean when the mode shows "None"?
It means no value in your list repeats more often than any other, so there is no single most-common value.
What's the difference between population and sample standard deviation?
Population statistics treat your list as the entire data set; sample statistics treat it as a sample drawn from a larger population and divide by one less than the count, giving a slightly larger result.
Why do the sample variance and standard deviation show "—"?
Sample statistics need at least two numbers to be meaningful. With only one number entered, there's nothing to compare it to, so those rows show a dash instead of a number.
How should I separate my numbers?
Any mix of commas, spaces or new lines works — the calculator pulls out every number it finds, including negative and decimal values.
Can I use the Statistics Calculator on my phone?
Yes. The page is fully responsive and works on mobile, tablet and desktop browsers alike.