Sunburst Chart

Free Online Sunburst Chart Maker

What is a Sunburst Chart?

A sunburst chart is a radial diagram that displays hierarchical data as concentric rings, where each ring represents a level in the hierarchy and each segment shows a share of its parent. It is ideal for revealing how a whole breaks down across multiple layers — from broad categories to granular subcategories. Use a sunburst chart when your data has two or more levels of nesting and you need to show proportions at every level at once.

Key Features

Multi-level hierarchy

Display nested categories of any depth — root at the center, expanding outward ring by ring.

Proportional arcs

Each segment's arc length reflects its value relative to its parent, making share comparisons instant at every level.

Color by category or depth

Apply consistent colors per top-level category or shade by ring depth to guide readers through the hierarchy.

Flexible labeling

Show names, values, or both on each segment — labels auto-hide on arcs too small to display cleanly.

AI-powered generation

Describe your hierarchy in plain text and the AI builds the nested structure and proportional values for you.

Best For

Budget breakdowns by department and expense type

File system or storage usage by folder and subfolder

Sales revenue by region, country, and product line

Website traffic by channel, campaign, and keyword

Organizational structure with teams and individual roles

Population data by continent, country, and city

When to Use

Your data has two or more levels of parent-child relationships
You need to show proportion at every level, not just the top level
You want readers to trace how a total breaks down step by step
A flat pie chart would hide important subcategory detail
You have fewer than 40 leaf nodes so outer rings stay legible

Common Mistakes

Adding too many leaf nodes, making outer rings too thin to read
Nesting more than 4-5 levels, which compresses inner rings into slivers
Using colors that repeat across unrelated branches, obscuring category relationships
Omitting a root node, which breaks the hierarchical structure
Choosing a sunburst when a grouped bar chart would show comparisons more directly
Allowing child values that do not sum to the parent value, distorting proportions

Related Tools

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Create Your Sunburst Chart with AI

Describe your hierarchy or paste values — our AI builds a sunburst chart in seconds.

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