Pie chart generator

Pie chart

Slice a circle into radial sectors proportional to the data. Create a private, publication-ready pie chart directly in your browser without transmitting sensitive rows off-device. Data is processed locally on your hardware with zero server uploads, enabling instant export to SVG, PNG, and Excel data.

Compositioncompositionpart-to-wholepercentage

Edit the data, then export.

Everything runs in your browser. Your data is not uploaded.

Data

Paste tab-separated data from Excel or edit the cells directly.

Paste or import table data

Paste a header row, or choose a local CSV/TSV file. Files are read in this browser and capped at 500 rows.

Choose CSV/TSV

Appearance

Chart title

Palette

Width Data labels LegendBackground

Preview

Sample preview of the example data. The live chart takes over as soon as you start working.

SVG, PNG, and Excel exports are generated locally in this browser. PowerPoint export is temporarily unavailable while its dependency path is reviewed for a high-severity image parser advisory.

Part-to-Whole Composition Mechanics

A pie chart visually represents part-to-whole composition by dividing a circular area into radial sectors (slices). The arc length and central angle of each sector are directly proportional to its percentage share of the total. This visualization intuitively demonstrates how individual components make up a complete 100% whole. All chart rendering and data processing are performed entirely locally on your device, guaranteeing that your information is never uploaded or shared.

Categorical Proportions & Table Structure

Format input columns for pie chart with explicit headers and numerical measurements. Verify that rows represent discrete categories or observations without unformatted symbol artifacts.

Sample Part-to-Whole Proportions

| Operating System | Market Share |

Segment Allocation Guidelines & Pitfalls

Ensure sufficient visual distinction for pie chart marks across standard and high-contrast viewports.
Align text labels horizontally whenever possible to improve cognitive readability for pie chart elements.
Double-check scale boundaries and zero-anchors before exporting pie chart presentation artwork.

Data shape: Category and numeric value columns
Exports: SVG, PNG, and Excel data; PowerPoint export is temporarily unavailable pending dependency review.

How it works

You edit a table in this page. The renderer draws an SVG from those rows in your browser, then you can download SVG, PNG, or Excel data. The table is not uploaded to any external processing server.

Frequently asked questions

Why do data experts hate pie charts?

The human eye is notoriously bad at estimating and comparing angular differences and 2D areas compared to linear lengths (bar charts).

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Reviewed 16 August 2026.