Box Plot CSV Data Visualizer
Create a box plot from CSV data online. Visualize statistical distributions and outliers across categories. Upload your CSV and export as PNG or SVG.
CSV to Box Plot — Free Online Tool
A box plot (also called a box-and-whisker plot) summarizes the statistical distribution of a numeric column grouped by a category. Each box shows the median, interquartile range (IQR), and whiskers extending to the min/max (excluding outliers, which are shown as individual points).
Select a categorical X column (e.g., group, region, experiment variant) and a numeric Y column (e.g., latency, score, value). One box is drawn per unique X value, making it easy to compare distributions across groups.
Frequently asked questions
What do the parts of a box plot mean?
The horizontal line inside the box is the median. The box spans the interquartile range (25th to 75th percentile). Whiskers extend to the furthest data point within 1.5× IQR. Points outside the whiskers are outliers.
Next step
Charting a CSV export means the data already went stale.
Every refresh is another export, another upload, another chart. Connect the source itself to your AI agent with Sequel and ask for the chart against live data.
Ask your agent
“Chart weekly signups for the last quarter and call out the inflection points.”