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DocsChartsBurn-downLast updated Nov 2, 2026

Burn-down

A budget used up through the month. Sample data: October error budget, 27.7 min left after 4 incidents.

Error budget burn-downError budget of 44.6 minutes for October: 27.7 minutes left on Oct 16 after 4 incidents; at the last hour's 6.2× rate it is gone on Oct 19, at 1× 6.8 minutes are left at the end of the month.010 MIN20 MIN30 MIN40 MIN123427.7 minGONE OCT 196.8 MIN LEFTOCT 1OCT 8TODAYOCT 22OCT 29BUDGET LEFTAT 6.2×, LAST HOURAT 1×EVEN BURN
Error budget burn-down
DayMinutes leftIncident
Oct 144.6
Oct 244.6
Oct 344.6
Oct 438.51
Oct 538.5
Oct 638.5
Oct 738.5
Oct 838.5
Oct 935.12
Oct 1035.1
Oct 1135.1
Oct 1235.1
Oct 1332.93
Oct 1432.9
Oct 1532.9
Oct 1627.74
Error budget burn-downError budget of 44.6 minutes for October: 27.7 minutes left on Oct 16 after 4 incidents; at the last hour's 6.2× rate it is gone on Oct 19, at 1× 6.8 minutes are left at the end of the month.010 MIN20 MIN30 MIN40 MIN123427.7 minGONE OCT 196.8 MIN LEFTOCT 1TODAYOCT 29BUDGET LEFTAT 6.2×, LAST HOURAT 1×EVEN BURN
Error budget burn-down
DayMinutes leftIncident
Oct 144.6
Oct 244.6
Oct 344.6
Oct 438.51
Oct 538.5
Oct 638.5
Oct 738.5
Oct 838.5
Oct 935.12
Oct 1035.1
Oct 1135.1
Oct 1235.1
Oct 1332.93
Oct 1432.9
Oct 1532.9
Oct 1627.74

Installation

  1. 1

    Set up the registry once

    Your token in .env and @chartory in components.json. Skip this when another chart is already installed.

    Installation guide
  2. 2

    Add the chart

    One command adds the Burn-down component to your project.

    npx shadcn add @chartory/burn-down
  3. 3

    Use it

    Pass your rows. The props are the Figma properties.

    usage.tsx
    import { BurnDown }  from "@/components/chartory/burn-down"<BurnDown  data={errorBudget}  size="m"  legend/>

Props

<BurnDown>

Every prop but data is a Figma property with the same name and values.

PropTypeDefault
data: The chart's data. The tables below list every field.BurnDownDataRequired
size: The size class. Each one is laid out again from the data."xs" | "s" | "m" | "l""m"
legend: Shows the legend row under the plot.booleantrue
color: The data colour of the primary marks (data/primary)."cat-1" | "cat-2" | "cat-3" | "cat-4""cat-1"

BurnDownData

The data prop: one object for the whole chart.

PropTypeDefault
days: The number of days.numberRequired
budget: The budget.numberRequired
left: The budget left, per day.number[]Required
today: Where today is on the axis.numberRequired
steps: One entry per step.BurnDownStep[]Required
fast: The fast pace: where it ends and its label.BurnDownFastRequired
even: The even pace: where it ends and its label.BurnDownEvenRequired
yt: The y axis ticks: [value, label] pairs.[number, string][]Required
xl: The x axis labels: [position, label] pairs.[number, string][]Required
nowText: The label at now.stringRequired

BurnDownStep

One object per entry in steps.

PropTypeDefault
i: The index of the item it belongs to.numberRequired
n: The count.numberRequired

BurnDownFast

The fast object.

PropTypeDefault
end: The end.numberRequired
text: The label as shown.stringRequired

BurnDownEven

The even object.

PropTypeDefault
end: The end.numberRequired
text: The label as shown.stringRequired

The data as a JSON Schema: schemas/burn-down.json

Burn-down chart: a React and Figma chart in four sizes

What does a burn-down chart show?

A burn-down chart starts with a budget and steps it down with each incident or use, against an even-burn line. You see what is left, when it runs out at the current rate and which events took the most. Use it for error budgets, credits and sprint scope.

Chartory ships it as a Figma component and a React component with the same name. The code installs from the shadcn registry with one command and lands in your project as a file you own.

What is the Burn-down component?

It is one <BurnDown> component. Its props are the Figma properties with the same names and values, and the props table above lists them. The data is minutes left per day and numbered incidents.

Sizes XS, S, M and L re-lay the chart out from the data instead of scaling it, so labels stay readable at every size.

When should I use it?

  • Does it only go down? Yes means the burn-down fits.
  • Is it a budget for a period? Yes means the burn-down fits.
  • Are the events the story? Yes means the burn-down fits.

When does another type fit better?

  • Used up and refilled. Use Stock sawtooth instead.
  • Spend building up. Use Budget runway instead.
  • One incident in detail. Use Incident tape instead.

Burn-down questions

Installing, data, Figma and plans.

  • Yes. It installs through the shadcn registry with the shadcn CLI, and the file lands in your project.

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