Treemap Chart Maker
Paste your categories and values and get an exact treemap — every rectangle sized to the number you entered.
A treemap, also written tree map, shows parts of a whole as nested rectangles, where each rectangle's area is proportional to its value. It does the job a pie chart does, but it keeps working when you have twenty categories instead of five. Prism renders a single level: one row of value-proportional rectangles, not nested parents and children.
What makes a treemap chart maker trustworthy?
Each rectangle's area is derived from your figure. A category worth twice another is drawn twice the size, every time.
A pie chart falls apart past about six slices. A tree map chart stays legible because rectangles tile the space instead of competing for angle.
Small rectangles get their labels handled deterministically rather than overlapping into noise.
Treemap or pie chart: when to use which
Use a pie chart for a handful of shares a reader can compare at a glance. Use a treemap when you have too many categories for a pie to stay readable, or when the values span orders of magnitude. For a hierarchy — product lines inside divisions, files inside folders — flatten it to the level you want compared before you paste it in.
How do you make a treemap or tree map chart with Gixo Prism?
Paste category and value pairs, or upload a CSV. One value per category, one level.
Read the largest and smallest rectangles back against your source. Area is the whole point of this chart, so it is the thing to verify.
Take it out as SVG for a deck, doc or page.
A treemap is one of sixteen chart types Prism renders. See the full set on the chart maker overview.
Frequently Asked Questions
Explore the Prism chart toolkit
Updated