Charts / Questions
The best chart for part of a whole
Fourteen charts, and when each one fits.
Short answer
For a few parts that add up to one total, use a donut. To see the split change over time, use stacked bars. With many parts or a hierarchy, use a treemap or a sunburst. To compare the split across groups, use a marimekko.
Updated Nov 2, 2026 · SaaS sample data
017 · DonutOne total, four parts: who brings October’s $184K.
030 · TreemapThe same total with a second level: plan, then North America (NA) or the rest (INTL).
003 · Stacked barsThe same four plans month by month, in $K, so the shift shows.
Same $184K
The donut gives the split: Enterprise is 45%. The treemap adds the level inside: North America brings $87K. The stacked bars show how it got there: Enterprise grew from 37% to 45% in a year.
If you ask
How big is each part of one total?
Use a017 · Donut
How does the split change month to month?
Use a003 · Stacked bars
Which parts matter, out of twenty or more?
Use a030 · Treemap
What sits inside each part?
Use a022 · Sunburst
How does the split differ between groups?
Use a047 · Marimekko
How much of a limit is used?
Use a020 · Progress ring
All fourteen
Common mistakes
Too many slices
Past six parts the small slices turn into slivers. Group them into Other, or use a treemap.
Parts that overlap
Survey answers where people pick more than one are not parts of a whole. Use bars, or a venn for the overlaps.
Donuts side by side
Angles are hard to compare across charts. To compare splits between groups, use stacked bars or a marimekko.
Questions
Which one is the pie chart?
017. It draws the full circle, with each part and its value in a list beside it. For one part against the rest, use the semi donut (018).
How many slices can a donut hold?
Up to six read well. Past that, group the small ones into Other, or switch to a treemap.
Do the parts have to add up to 100%?
Yes. Every chart here shows one total. If people can pick more than one answer, use bars, or a venn for the overlaps.
Do these charts come in every size?
Yes. All fourteen come in XS, S, M and L, each laid out again for its size, in light and dark.
Other questions
- Change over time
- Compare items
- Distribution
- Flow between steps
- Relationship
- Schedule and status
- Space and place
Not sure it is a part of a whole? Start from what the chart has to show.
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