# Funnel (/docs/charts/funnel)

Funnel answers "where does the pipeline leak?". Stepped rectangles, zero-anchored — never the classic tapered
silhouette, which interpolates data that doesn't exist. The drop _between_ neighbors is the read.

```tsx
<Funnel
  data={[
    { label: "Visitors", value: 12400 },
    { label: "Signups", value: 5704 },
    { label: "Activated", value: 2730 },
    { label: "Paid", value: 1116 },
  ]}
  title="Signup funnel"
  width={220}
  height={66}
/>
```

## Install

```tsx
import { Funnel } from "@microcharts/react/funnel";

<Funnel data={stages} title="Signup funnel" />
```

Setup (package + stylesheet): [Quickstart](/docs/quickstart#set-up-with-an-ai-agent) or paste [`/agent-setup.md`](/agent-setup.md) into your agent.


## When to use it

- **Good for** — per-campaign funnels in table cells, conversion bridges in cards.
- **Avoid for** — unordered categories (MiniBar) or more than 6 stages.


## Variants

```tsx
// every stage as % of the FIRST stage — cross-funnel comparison
<Funnel
  data={[
    { label: "Visitors", value: 12400 },
    { label: "Signups", value: 5704 },
    { label: "Paid", value: 1116 },
  ]}
  mode="rate"
/>
```

```tsx
<Funnel
  data={[
    { label: "Visitors", value: 12400 },
    { label: "Signups", value: 5704 },
    { label: "Activated", value: 2730 },
    { label: "Paid", value: 1116 },
  ]}
  highlight="Activated"
/>
```

## Edge cases

```tsx
// one stage — a single full-height column, no connector slats, overall 100%
<Funnel data={[{ label: "Visitors", value: 8000 }]} />
```

```tsx
// a stage larger than its predecessor renders truthfully — the summary
// appends "Stage 3 exceeds stage 2."
<Funnel
  data={[
    { label: "Trial", value: 900 },
    { label: "Churned", value: 420 },
    { label: "Win-back", value: 610 },
  ]}
/>
```


## Why this default

`rate` always normalizes to stage 1, never to the previous stage — per-stage rates hide compounding loss. A stage larger
than its predecessor (re-engagement funnels) renders truthfully and the summary appends the inversion. The connectors
and zero-anchored columns keep the read a measurement, not a shape.

## Accessibility

The accessible name is the conversion story — **"4 stages, 12,400 to 1,116 — overall 9%."**, plus **"Stage 3 exceeds
stage 2."** when a pipeline inverts. The interactive entry roves stages (**"Activated: 2,730 — 22% of Visitors."**).

The interactive entry follows the shared [interaction contract](/docs/accessibility#one-interaction-contract):
arrow keys rove between units on both axes, `Home` and `End` jump to the ends, and a click, tap, `Enter` or
`Space` selects a unit — pinning its readout so it survives blur, until you select it again or press `Escape`.
On touch, a tap pins and a drag scrubs.

## Props

| Prop | Type | Description |
| --- | --- | --- |
| `data` (required) | `{ label; value }[]` | Ordered stages. |
| `mode` | `"absolute" \| "rate"` | Rate = % of the FIRST stage (never the previous). |
| `connectors` | `boolean` | Retained-share slats between stages. |
| `label` | `"none" \| "percent" \| "value"` | Above each column (deterministic drop-out; default percent). |
| `highlight` | `number \| string` | Accent the leak stage. |
| `animate` | `boolean` | (interactive) Opt-in entrance motion when the chart mounts client-side — add `import "@microcharts/react/motion"` once. Inert on the server, on hydrated server HTML, and under `prefers-reduced-motion`. |

Plus the shared grammar — `data`, `domain`, `color`, `title`, `summary`, `format` — and the layout props (`width`, `height`, `className`, `style`) that every chart accepts. Interactive entries also share `animate` and `live`, and — wherever a chart has more than one navigable unit — `onActive`, `onSelect`, `selectedIndex` and `defaultSelectedIndex`; and — wherever the chart shows a hover value — `readout`. See [the shared grammar](/docs/quickstart#the-shared-grammar).