Box Plot Maker
A box and whisker plot summarises a distribution: the box spans the interquartile range, the line is the median, and points beyond the whiskers are outliers.
Chart type
Your data12 rows · 2 cols
CSV detected
Live previewUpdates as you type · nothing leaves your browser
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Features
What the box plot maker gives you
- Paste CSV, Excel cells, TSV, JSON or a Markdown table
- Live preview — every edit renders instantly, no Generate button
- Export 2x PNG, vector SVG, PDF or copy the image
- Transparent background and five business colour palettes
- No signup, no watermark, nothing uploaded to a server
Use cases
When to use a box plot
- Compare test scores across classes
- Response times across server regions
- Salary spread by job level
FAQ
Box Plot Maker questions
- How should I lay out data for a box plot?
- Either long format — a group column plus one numeric column, with many rows per group — or wide format, where each column is its own distribution. Both are detected automatically.
- How are the whiskers and outliers calculated?
- Whiskers extend to the furthest point within 1.5 times the interquartile range of the quartiles. Anything past that is drawn as an individual outlier circle — the standard Tukey convention.
- Box plot or histogram?
- A histogram shows the shape of one distribution in detail. A box plot compresses each distribution into five numbers so you can compare many groups side by side.
Related
Try another chart type
Import formats
Paste from anything
- CSV to ChartPaste raw CSV text or drop a .csv file. Delimiters, quoted fields and header rows are detected automatically.
- Excel to ChartSelect cells in Excel, press Ctrl+C, then paste here. Copied spreadsheet cells arrive as tab-separated values, which FastChart reads natively.
- JSON to ChartPaste an array of objects, an array of numbers, or a flat key–value object. Keys become series and values become data points.
- Markdown Table to ChartGreat for tables produced by ChatGPT, GitHub READMEs or Notion. Pipes and the separator row are handled for you.
- TSV to ChartTab-separated values are what your clipboard holds after copying from a spreadsheet or a database client. Paste them straight in.
- Google Sheets to ChartGoogle Sheets charts are hard to style and hard to export cleanly. Copy the range instead and get an export-ready chart here.