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Doughnut Chart Maker — Free CSV Donut & Ring Charts

Doughnut chart from CSV — perfect for KPI slides with a hollow centre. PNG export, no upload.

Free No signup Client-side Privacy friendly Updated

How to use

  1. 1 Paste two-column CSV — label and value.
  2. 2 Toggle the legend to fit your design.
  3. 3 Download the doughnut as PNG.

Why use this tool

  • Doughnut layout — same data as pie but with a clearer centre for KPI overlay in slides.
  • Chart.js loaded on demand.
  • Quoted CSV cells supported.
  • Pure client-side — your data stays on your device.

Frequently asked questions

Difference from a pie chart?

Visually a ring instead of a filled circle. The data and computation are identical — see the <a class="underline" href="/pie-chart-maker">Pie Chart Maker</a>.

Can I put a label in the middle?

Download the PNG and overlay your KPI in your slide tool — keeps this tool dependency-free.

Why no per-slice legend value?

Hover the slices in the live preview to see the value — the PNG export keeps it clean by default.

What is Doughnut Chart Maker?

A Doughnut Chart Maker is a tool that generates a doughnut chart from CSV data in the browser. It renders proportional segments around a ring with a hollow centre, a layout suited to KPI displays. The chart can be exported as a PNG image, and all processing runs client-side with no file upload.

Features

CSV-driven doughnut rendering

Reads the first row as headers and the first two columns as label/value pairs, drawing one ring segment per data row with Chart.js's doughnut chart type.

Automatic slice coloring

Each row is assigned a color from a fixed 10-hue palette (cycled by row index) with a white 1px border between segments, so charts stay legible without manual color picking.

One-click PNG export

Download button calls canvas.toDataURL('image/png') on the rendered chart and triggers a browser download named doughnut-chart-maker.png — the exported image reflects exactly what is on screen, including the legend toggle state.

Client-side only, quoted CSV supported

Chart.js is imported dynamically in the browser and the CSV parser handles RFC 4180 quoting (quoted fields, embedded commas, escaped quotes); the pasted data never leaves the device — there is no upload or server-side processing.

Example

Input

Source,Users
Organic,420
Direct,310
Referral,180
Social,140
Email,90

Output

doughnut-chart-maker.png — canvas-resolution PNG (matches the on-screen preview element size), 5 colored ring segments sized proportionally to 420/310/180/140/90, white 1px segment borders, legend shown above the chart if the 'Show legend' toggle is on

Common use cases

  1. 1

    KPI slides with a ring for center-label overlay

    Export a doughnut PNG of a metric breakdown (e.g. traffic source share) and overlay a headline number in the hollow center inside a slide editor, since the tool itself does not render center text.

  2. 2

    Quick visualization of categorical proportions

    Paste a two-column CSV of category and value (e.g. survey answer counts, budget line items) to instantly see proportional share as ring segments without opening a spreadsheet app.

  3. 3

    Reusing spreadsheet exports without reformatting

    Paste CSV rows copied directly from Excel or Google Sheets, including quoted fields with embedded commas, since the built-in RFC 4180 parser handles quoting and delimiter detection automatically.

Summary

Doughnut Chart Maker renders a Chart.js 4 doughnut chart from pasted two-column CSV data (label, value), using the first column as slice labels and the second as values, with one segment colored per row from a fixed 10-color palette. CSV is parsed client-side with an RFC 4180-compliant parser, Chart.js is lazy-loaded on demand, and the finished chart is exported as a PNG via the canvas's toDataURL method — no data is uploaded to a server.

Category
Creator
Pricing
Free
Privacy
Browser-based
Signup
Not required

References

Privacy

Your data never leaves your browser unless explicitly stated. Doughnut Chart Maker runs entirely client-side — no server upload, no logging, no tracking of your input.

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