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5 Charts
Composition Charts
Show how parts make up a whole
Pie Chart
beginnerShow part-to-whole relationships as proportional slices of a circle.
Best for:
- Showing 2–5 parts that sum to a meaningful whole
- When one or two categories dominate (over 50%)
- Part-to-whole communication for general audiences
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Donut Chart
beginnerA pie chart with a center hole — allows a summary metric in the middle.
Best for:
- Dashboard widgets where a center KPI label adds value
- Part-to-whole with 2–5 segments
- When you want a slightly more modern look than a pie chart
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Stacked Bar Chart
beginnerStack multiple series vertically to show composition and total simultaneously.
Best for:
- Showing composition across multiple categories
- Comparing both totals and parts in one chart
- Replacing multiple pie charts for the same data
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Treemap
intermediateShow hierarchical composition using nested rectangles sized by value.
Best for:
- Hierarchical data where size encoding is meaningful
- Large number of categories that need to fit in limited space
- Portfolio composition (products, markets, segments)
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Waffle Chart
intermediateA square grid where each cell represents a percentage, making proportions tangible.
Best for:
- Making percentages tangible and concrete for general audiences
- Infographics and editorial data journalism
- When "1 in X" framing is more impactful than a percentage
View full guide →