Treemap Maker — Proportional Area Tiling & Hierarchy Visualizer
A treemap recursively subdivides a bounding rectangle into non-overlapping sub-rectangles whose surface areas are strictly proportional to each category's numerical magnitude ($Area_i = W \times H \times x_i / \sum X$).
Tip: Paste Excel or Google Sheets rows (Ctrl+V / ⌘V) directly into any cell.
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Tile surface area: Area_i = (x_i / sum(X)) * (W_canvas * H_canvas). Aspect ratio optimization minimizes max(w_i / h_i, h_i / w_i) toward 1.0.
Chart Design & Use-Case Tips
- 01Tile surface area: Area_i = (x_i / sum(X)) * (W_canvas * H_canvas). Aspect ratio optimization minimizes max(w_i / h_i, h_i / w_i) toward 1.0.
- 02Use a treemap instead of a pie chart when you have 6 to 15 categories; rectangular tiling uses 100% of canvas pixels efficiently without thin, unreadable wedges.
- 03The squarified layout automatically sorts largest tiles toward the top-left origin for effortless size comparison.
- 04Toggle data labels ON to display category name, raw value, and percentage share directly inside every tile.
Frequently Asked Questions
Why use a treemap over a pie or donut chart?+
Pie charts become cluttered beyond 5–6 slices, whereas a treemap cleanly displays 8 to 15+ categories with embedded text labels inside each proportional block.
How does the Treemap Maker arrange the rectangles?+
It sorts categories in descending order and applies recursive binary/strip partitioning so tiles maintain balanced aspect ratios that are easy to read and label.
What are common industry applications for treemaps?+
Stock market sector heatmaps, cloud infrastructure cost breakdowns, corporate expense budgets, and disk space utilization audits.