Statistics Calculator
Mean, median, mode, standard deviation, variance, quartiles and more for a list of numbers.
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How to use
- Paste or type numbers separated by commas, spaces or new lines — a spreadsheet column works.
- All statistics update instantly.
- Pick the sample or population standard deviation to suit your data.
- Copy all results at once with “Copy all”.
How it works
Sample standard deviation divides by n − 1 and is the right choice when your numbers are a sample from a larger group; population standard deviation divides by n. Sums use compensated (Kahan) summation for accuracy with long lists, and quartiles use linear interpolation like Excel’s QUARTILE.INC.
Limitations
- Anything that isn’t a number is skipped and listed so you can check it.
Privacy
Your text is processed entirely in this browser tab. Nothing is uploaded, logged or saved by this tool.
Local processing protects your data from being uploaded, but it cannot protect against a compromised device or malicious browser extensions.