# Pie chart

A React component in [Beamline](https://beamline.io/)'s [Charts & data-vis](https://beamline.io/components/charts) category. Live demo: https://beamline.io/components/pie-chart

A few shares of a whole as a pie or donut, with spaced slices, percent labels, a centre readout and a list of every slice with value and share; hovering or focusing a row lifts its slice, clicking pins it.

## Use it for

- Two to six shares that add up to a whole (revenue by [plan](https://beamline.io/components/plan), traffic by channel).
- A headline total with its breakdown (donut with centre readout).

## Not for

- Many categories or close values ([bar-chart](https://beamline.io/components/bar-chart) or [bar-list](https://beamline.io/components/bar-list)).
- Change over time ([area-chart](https://beamline.io/components/area-chart) with Share stacking).
- Unit counts ([waffle-chart](https://beamline.io/components/waffle-chart)).

## Anatomy

- title
- plot (slices, centre readout in a donut)
- slice list (swatch, name, value, share; buttons)
- table button

## Variants

- **0**: donut
- **1**: gap (spaced, rounded slices)
- **2**: labels (percent on slices)
- **3**: list beside or below

## States

- loading (skeleton)
- empty (no data)
- missing values (listed as Not measured, never drawn as 0)
- active (hover or focus previews)
- selected (click or Enter pins)
- table view

## Keyboard

- Tab moves through the slice list; focus previews the slice and the centre reads it
- Enter or Space pins the slice (aria-pressed); Escape clears
- The table button switches to a table of every slice

## Motion

Slices sweep in once (500 ms); the active slice lifts 4 px and the others dim in 150 ms; the centre number rolls. Nothing moves under reduced motion.

## Props

| Prop | Type | Default | Description |
| --- | --- | --- | --- |
| `data / label / value` | `T[] / keyof T / keyof T` | — | Rows, the column naming each slice, the column with its amount. |
| `title / hideTitle / description` | `string / boolean / ReactNode` | — | The figure's name is always its accessible name. |
| `format` | `(v: number) => string` | — |  |
| `table` | `boolean` | — | Offer the table view (default on). |
| `loading` | `boolean` | — |  |
| `actions` | `ReactNode` | — |  |
| `className` | `string` | — |  |
| `donut` | `boolean` | — |  |
| `gap` | `boolean` | — |  |
| `labels` | `boolean` | — | Percent on slices large enough to hold it. |
| `centerLabel` | `string` | — | What the donut centre calls the total (default Total). |
| `colors` | `string[]` | — |  |
| `size` | `number` | — | Diameter in px (default 200). |
| `list` | `boolean` | — | Show the slice list (default on). |
| `active / defaultActive / onActiveChange` | `string \| null` | — | The selected item; hover and focus preview others. |
| `classNames` | `ChartClassNames` | — | Frame, tooltip and slice-list parts as applicable to this chart. |
| `style / ref` | `CSSProperties / Ref<HTMLElement>` | — | The native chart figure; layout measurement refs stay internal. |

## Dependencies

`motion`

## Import

```tsx
import { PieChart } from "@/components/pie-chart/pie-chart";
```

## Get it

Pie chart is part of Beamline: 190 React components and screens your coding agent (Claude Code, Codex, Cursor or any MCP client) installs into your app through Beamline's MCP server, as a ready-built package or as plain React source you can change. $49 one payment (regular $200), no subscription, a year of updates, one licence for your whole team. [Get Beamline](https://beamline.io/checkout?pack=complete) · [Connect your agent](https://beamline.io/connect)

## More in Charts & data-vis

- [Activity heatmap](https://beamline.io/components/activity-heatmap): A calendar of daily counts, one cell per day on a sequential ramp: weeks across, weekdays down, month and weekday labels, a legend scale, hatched days…
- [Area chart](https://beamline.io/components/area-chart): Amounts over time as filled areas: overlapping, stacked or as shares of 100%, five fills, two strokes, five curves, a range handle; gaps for missing…
- [Bar chart](https://beamline.io/components/bar-chart): Amounts by category as bars: columns or rows, grouped, stacked or as shares, reference lines, five looks (rounded, cells, trace, isometric, monospace), a…
- [Composed chart](https://beamline.io/components/composed-chart): Different measures on one time axis: bars, lines and areas per series, a left and a right value axis with their own formats, and reference lines.
- [Gauge](https://beamline.io/components/gauge): One value against a known range: a semicircle, a 270° dial or a full ring, filled or with a needle, coloured bands with their names (healthy, busy…
- [Line chart](https://beamline.io/components/line-chart): Values over time as lines: curves, point markers, dashed series for forecasts, reference lines for limits and targets, an optional zero baseline and a…
- [Radar chart](https://beamline.io/components/radar-chart): A few series compared across the same five to eight dimensions as polygons on a polygon or circle grid; hover or arrow keys pick a dimension and read…
- [Radial chart](https://beamline.io/components/radial-chart): Progress of a few measures toward their targets as concentric rings, full or half circle, with a centre readout and a list of each ring's value, target…
- [Ridgeline](https://beamline.io/components/ridgeline): Distributions per group as overlapping density ridges (response time by region, order size by plan): an overlap control, median and p95 readouts per row…
- [Sankey chart](https://beamline.io/components/sankey-chart): Flows between stages as bands whose width is the amount: sources to pages to outcomes, budgets to teams; hovering or focusing a node lights its flows and…
- [Slope chart](https://beamline.io/components/slope-chart): Change between two points in time per item, by value or by rank: labels on both sides that never collide, rising and falling told by the end marker (▲ ▼)…
- [Sparkline](https://beamline.io/components/sparkline): A compact trend beside its value: point along it or focus it and use ← → to read each point; nulls are gaps. TrendLine is the bare line.
- [Streamgraph](https://beamline.io/components/streamgraph): Stacked flows over time around a centre baseline, with silhouette, wiggle, expand (shares) and zero offsets: a legend that turns layers on and off, a…
- [Treemap](https://beamline.io/components/treemap): Nested rectangles sized by value (spend by team, then service), squarified so tiles stay close to square: labels that fit or hide, hover and focus…
- [Waffle chart](https://beamline.io/components/waffle-chart): Units of a whole as a grid of cells by category (seats used of a plan, tickets by channel): a 10×10 grid by default, hatched cells for units whose…