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Mermaid diagram

Pie Chart — free online editor

Mermaid pie charts visualize a single dataset as proportional slices — the easiest Mermaid diagram to start with.

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What is a Mermaid pie chart?

The pie diagram has the simplest syntax in Mermaid: just `pie title …` followed by one line per slice in the form `"Label" : value`. Add `showData` to display numeric values inside the legend.

When to use it

  • ▸Show market share or category breakdowns
  • ▸Visualize survey results
  • ▸Quick stats in slide decks or READMEs

Syntax in one paragraph

Format: `pie title My Title` then `"Slice name" : 42`. Optional `pie showData` at the top puts numeric values in the legend.

Example: Browser market share

pie title Browser Market Share 2024
    "Chrome"  : 65
    "Safari"  : 19
    "Firefox" : 4
    "Edge"    : 4
    "Other"   : 8
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Full Mermaid editor →

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