# Area Chart Stacked Expand

> Two stacked areas normalized so every month fills 100%, showing each series' share rather than its value.

A shadcn/ui block from the [@esuiss](https://suiss.app/ui?utm_source=shadcn.exchange) registry, listed on [shadcn.exchange](https://shadcn.exchange/r/esuiss/area-chart-stacked-expand).

- Page, with a live preview: https://shadcn.exchange/r/esuiss/area-chart-stacked-expand
- Screenshot: https://abzjhwgwpdpz7ua5.public.blob.vercel-storage.com/shots/esuiss/area-chart-stacked-expand-light-dc628dc31ac413e3.png
- Registry item: https://suiss.app/ui/r/new-york-v4/area-chart-stacked-expand.json
- Categories: charts, charts-area
- Listed: 2026-10-20, source last changed 2026-10-20

## Install

```bash
npx shadcn@latest add https://shadcn.exchange/r/esuiss/area-chart-stacked-expand.json
```

Run it in a project that has shadcn/ui set up. It adds the files below and installs what they depend on.

## Dependencies

- npm packages: `recharts`
- Registry items: `@esuiss/card`, `@esuiss/chart`

## Files

### `components/charts/area-chart-stacked-expand.tsx`

```tsx
"use client"

import { Area, AreaChart, CartesianGrid, XAxis, YAxis } from "recharts"

import {
  Card,
  CardContent,
  CardDescription,
  CardHeader,
  CardTitle,
} from "@/components/ui/card"
import {
  type ChartConfig,
  ChartContainer,
  ChartTooltip,
  ChartTooltipContent,
} from "@/components/ui/chart"

const chartData = [
  { month: "January", desktop: 186, mobile: 80 },
  { month: "February", desktop: 305, mobile: 200 },
  { month: "March", desktop: 237, mobile: 120 },
  { month: "April", desktop: 173, mobile: 190 },
  { month: "May", desktop: 209, mobile: 130 },
  { month: "June", desktop: 264, mobile: 140 },
]

const chartConfig = {
  desktop: { label: "Desktop", color: "var(--chart-1)" },
  mobile: { label: "Mobile", color: "var(--chart-2)" },
} satisfies ChartConfig

export function AreaChartStackedExpand() {
  return (
    <Card variant="filled" size="sm">
      <CardHeader>
        <CardTitle>Stacked to 100%</CardTitle>
        <CardDescription>Each month adds up to 100%</CardDescription>
      </CardHeader>
      <CardContent>
        <ChartContainer
          config={chartConfig}
          className="aspect-auto h-48 w-full"
        >
          <AreaChart
            accessibilityLayer
            data={chartData}
            stackOffset="expand"
            margin={{ top: 10, right: 4, left: 12, bottom: 0 }}
          >
            <CartesianGrid vertical={false} strokeDasharray="2 4" />
            <XAxis
              dataKey="month"
              tickLine={false}
              axisLine={false}
              tickMargin={8}
              interval={0}
              tickFormatter={(value: string) => value.slice(0, 3)}
            />
            <YAxis
              orientation="right"
              tickLine={false}
              axisLine={false}
              tickMargin={6}
              width="auto"
              ticks={[0, 0.5, 1]}
              tickFormatter={(value: number) => `${Math.round(value * 100)}%`}
            />
            <ChartTooltip content={<ChartTooltipContent indicator="line" />} />
            <Area
              dataKey="mobile"
              type="natural"
              stackId="a"
              stroke="var(--color-mobile)"
              fill="var(--color-mobile)"
              fillOpacity={0.35}
            />
            <Area
              dataKey="desktop"
              type="natural"
              stackId="a"
              stroke="var(--color-desktop)"
              fill="var(--color-desktop)"
              fillOpacity={0.35}
            />
          </AreaChart>
        </ChartContainer>
      </CardContent>
    </Card>
  )
}
```