Mean / Median / Std. Deviation Calculator
10 toolsCalculate statistics for a list of numbers.
Runs in your browser — your files and text stay on your device
Calculate the count, sum, mean, median, mode, minimum and maximum, and population standard deviation of a list of numbers. Paste values separated by commas, spaces or new lines. Standard deviation divides by N rather than N-1, so it is not the sample version. The median is less affected by extreme values than the mean, which is why it's often used for incomes and prices.
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Count
7
Sum
42
Mean
6
Median
6
Std. Deviation
2
Min / Max
3 / 9
How to use this tool
- 1Paste a list of numbers, separated by commas, spaces, or new lines.
- 2Count, sum, mean, median, mode, standard deviation, and range compute instantly.
Frequently asked questions
Is this population or sample standard deviation?
Population standard deviation, dividing by N rather than N-1.
What happens with duplicate values?
They're all counted normally — the mode shows the most frequent value(s), if any repeat.
Is my data sent anywhere?
No — everything computes entirely in your browser.