Hexbin Plot Maker
A hexbin plot solves overplotting: instead of drawing thousands of overlapping dots it bins them into hexagons shaded by density.
Chart type
Your data20 rows · 2 cols
CSV detected
Live previewUpdates as you type · nothing leaves your browser
Export
Features
What the hexbin 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 hexbin plot
- Thousands of sensor or log readings
- Dense two-variable survey data
- Any scatter plot that has turned into a solid blob
FAQ
Hexbin Plot Maker questions
- When should I use a hexbin instead of a scatter plot?
- Once you have more than about a thousand points and the middle of your scatter plot has become a solid mass. Hexbin recovers the density information the overplotting destroyed.
- Why hexagons rather than squares?
- Hexagons tile the plane with less edge distortion than squares and every neighbour is equidistant, so density gradients look smoother and less blocky.
- How is the shading calculated?
- Each hexagon is shaded by how many points fall inside it, scaled linearly from the lightest to the darkest colour in the active palette.
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.