1 category × 1 value over timeRecommended: Bar chart
Smart chart picker
Datastory reads your columns and proposes the right encoding: categorical, temporal, geographic or hierarchical. Switch type without re-binding data.
Free visualization
Make interactive treemaps for free
Create interactive treemaps online using Datastory's self-serve data-visualization tool. Start for free, upload your data or use open datasets, customise your chart, and publish or embed it in minutes.
Sign up
No credit card needed.
Why Datastory
Why Datastory is right for you
Designed for data storytellers, analysts, journalists, NGOs and research teams who communicate insights through clear data visualization.
Designed for data storytellers, analysts, journalists, NGOs and research teams who communicate insights through clear data visualization.
Contrast (WCAG)AA · AAA ✓
Color-blind safe✓ Verified
Keyboard & screen-reader✓ Ready
Accessible by default
Colour-blind-safe, contrast-checked palettes with keyboard navigation and screen-reader labels for inclusive charts without extra work.
STORY CHART
Renewable energy share, EU
A steady climb, and the curve is bending up.
Source · Eurostat · Made with Datastory
+12 pp
Editorial defaults
Title hierarchy, annotations and source citations wired up automatically. You start at “good”, not at “blank”.
AaAverta
AaGeorgia
AaMono
Adaptable to your brand
Apply your fonts, colours and logo effortlessly, or start from editorial presets.
Made for the web
Fast, responsive visuals that work everywhere: desktop, mobile, embed or print.
＋ Drop a CSV or paste a table
No code needed
Create powerful visuals without writing a single line of code.
2,000+datasets
OECDWHOEurostatWorld BankUN
Access open data
A curated database of vetted public statistics from 100+ trusted sources, already cleaned and linked.
Built for storytelling
Turn charts into clear, compelling narratives. Pair text and annotations with your data to guide every reader to the point.
Visualize your data with interactive treemaps
To create a treemap in Datastory, upload a spreadsheet or paste your data directly into the editor. If you do not have data ready, you can start from an open dataset in Datastory's data catalog and build a chart from there.
Treemaps created with Datastory are interactive and designed for use on the web. Choose the treemap template, define the hierarchy in your data, and map values to size and colour. Changes appear instantly, making it easy to explore structure and relative importance.
Sign upTools for storytellers
Each tool helps transform data into publishable stories, with support for structure, context, and clarity at every step.
Each tool helps transform data into publishable stories, with support for structure, context, and clarity at every step.
Related charts and graphs
Explore other chart types to find the perfect visualization for your data.
Still have questions?
Get quick answers to the most common questions about treemaps.
Yes. Datastory offers a free tier that lets you create and publish interactive treemaps online using your own data or open datasets.
Treemaps are used to show hierarchical data and compare many values at once by representing them as nested rectangles sized by value.
No. Datastory is a self-serve tool designed to work without coding.
If you can't find what you're looking for, just email us
Ready to create treemaps?
Start creating beautiful, interactive visualizations today. Free forever, no credit card required.
Sign up
Resources
©2026 Datastory All rights reserved.