Statistics & probability

Box plot builder

Compare grouped distributions, medians, spread and outliers from your own CSV.

Box plot builder
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Make it yours

Inputs and settings

UTF-8 CSV with the example headings. Files stay on your device.

Up to 25 MB per file, 50,000 data rows, 200 columns and 2 million data cells. Fully blank rows and columns are ignored before row, column and cell limits are checked. Individual tools may have smaller result or chart limits.

Adjust the inputs, then update the preview. Sliders and selectors update directly.

Files stay on your device

See it take shape

LOCAL & PRIVATE

Preparing your workspace…

Your files and work stay in this page. Export anything you want to keep.

A clear answer. Here’s how.

Requires exact Group,Value headings, 1–10,000 rows and at most 10 groups. Blank numeric cells are skipped and counted; other malformed numbers are rejected. Group labels use at most 120 characters. Quartiles use linear interpolation at index (n−1)p (R type 7); whiskers are the smallest and largest observed values within inclusive Q1−1.5 IQR and Q3+1.5 IQR fences. Outliers are marked, with at most 200 markers per group; the summary counts all outliers. Single observations and constant groups remain visible. Plots are descriptive and do not establish significance or cause. Export SVG plus a summary CSV.

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