HeroTools / Productivity
Local · Private · Free

Statistics Calculator

Paste a column of numbers and get the full summary — mean, median, mode, spread and quartiles — with a live histogram and box-plot, all on your device.

0 values

🔒 Calculated locally — your data never leaves the browser.

Summary

Enter at least one number to see the statistics.

Population and sample — done right

Variance and standard deviation are shown for both the whole population (÷N) and a sample (÷N−1, Bessel's correction), so you pick the one that matches your data. Quartiles use linear interpolation, the box-plot whiskers follow the 1.5×IQR rule and flag outliers, and the histogram auto-bins with a sensible default — everything computed in your browser, free forever.

About Statistics Calculator

Statistics Calculator is a free, private productivity tool that runs entirely in your web browser. Paste numbers for mean, median, mode, std-dev, quartiles & a histogram. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for statistics, mean, median, standard deviation. Like every HeroTool by Digital Heroes, Statistics Calculator is 100% free with no limits.

How to use Statistics Calculator

  1. Open Statistics Calculator — it runs entirely in your browser, with no signup.
  2. Fill in the fields or choose the options you want.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is Statistics Calculator free?

Yes — Statistics Calculator is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. Statistics Calculator runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does Statistics Calculator do?

Paste numbers for mean, median, mode, std-dev, quartiles & a histogram.

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