Box and Whisker Plot Maker

A box and whisker plot (also called a box plot) is a chart that summarizes a dataset using five key statistics: minimum, first quartile (Q1), median, third quartile (Q3), and maximum. The 'box' spans Q1 to Q3, the line inside shows the median, and the 'whiskers' extend to the data extremes or to 1.5 times the interquartile range. Outliers beyond the whiskers are plotted as individual points.

No. In 'Raw values' mode, you just paste your individual data points one per line and the tool calculates min, Q1, median, Q3, and max for you automatically. If you already have summary statistics, switch to 'Manual summary' mode and enter them directly.

Yes. Click 'Add category' to include as many groups as you need. Each group gets its own box with a distinct color, and all groups are displayed side by side on the same axis for easy comparison.

Tukey whiskers (1.5 × IQR) are the standard in statistics — they extend to the last data point within 1.5 times the interquartile range, and any points beyond that are plotted as outliers. Min/max whiskers simply extend to the smallest and largest values in the dataset, showing the full data range without separating outliers. Tukey is recommended for most analytical contexts.

In the Display Settings panel, find the 'Orientation' option and select 'Horizontal.' Your chart flips instantly — no rebuild required. Horizontal layouts work well when you have long category names or want to fit the chart into a landscape slide.

Yes. The core box and whisker plot maker is free to use with no sign-up required. You can create, customize, and download your chart as a PNG or SVG at no cost. AI-powered generation and file upload are available on paid plans.

In 'Manual summary' mode, there is an optional 'Outliers' field where you can enter comma-separated values. In 'Raw values' mode with Tukey whiskers selected, outliers are calculated and plotted automatically. You can also toggle outlier display on or off in the Display Settings panel.

The mean marker is an optional overlay that shows the arithmetic average of the dataset, distinct from the median line. When the mean and median differ noticeably, it signals skewed data — useful for communicating distribution shape to non-statistical audiences.

Yes, embed codes are available on Plus and Pro plans. Copy the snippet and paste it into any webpage to display an interactive box plot without exporting image files. The chart updates if you edit it in MakeCharts.

Absolutely. The tool supports standard Tukey whisker conventions, proper outlier plotting, and high-resolution SVG export — making it suitable for research posters, papers, and presentations. You can also add precise axis labels and legends to meet publication standards.