Statistics Calculator β mean, median, SD
Get mean, median, mode, range, variance, standard deviation and quartiles from a list of numbers, instantly.
π Runs entirely in your browser. Your input and output are never sent to a server or stored β fully private.
Separate values by anything β commas, spaces or new lines. Click a result to copy.
About this tool
This statistics calculator takes a list of numbers and instantly reports the full set of descriptive statistics: mean, median and mode, the range, variance and standard deviation, and the quartiles. Paste or type your data separated by spaces, commas or new lines, and the summary updates as you go β useful for schoolwork, lab data or quick analysis. All of it is computed in your browser.
Frequently asked questions
What is the difference between sample and population standard deviation?
Population standard deviation divides by the number of values, while sample standard deviation divides by that number minus one, a correction used when your data is only a sample of a larger group. The calculator reports both, so you can pick the one your assignment or analysis requires.
How should I format the numbers I paste?
Separate your values with spaces, commas, tabs or line breaks β any mix works. Decimal points and negative numbers are fine, and anything that is not a valid number is simply ignored, so a stray label will not break the result.
Is my data sent anywhere?
No. Your data set is analysed entirely in your browser, so the numbers you paste are never uploaded to or stored on any server.